Doctor&#039;s Best High Absorption CoQ10 with Bioperine

Liver Disease details

Coenzyme Q10 improves liver health

Based on 11 Researches

Vrentzos E, Ikonomidis I, Pavlidis G, Katogiannis K, Korakas E, et al. Six-month supplementation with high dose coenzyme Q10 improves liver steatosis, endothelial, vascular and myocardial function in patients with metabolic-dysfunction associated steatotic liver disease: a randomized double-blind, placebo-controlled trial. Cardiovasc Diabetol. 2024;23:245. doi:10.1186/s12933-024-02326-8

We conducted a study to explore the effects of high-dose coenzyme Q10 supplementation on patients suffering from liver disease related to metabolic dysfunction, known as Metabolic-dysfunction Associated Steatotic Liver Disease (MASLD). In a well-structured double-blind, placebo-controlled trial with sixty participants, half received 240 mg of coenzyme Q10 daily, while the other half received a placebo for six months.

Our findings were promising. Patients taking coenzyme Q10 showed significant improvements in various aspects of their health related to liver functions and cardiovascular health. Specifically, we observed a reduction in liver fat content, as assessed by the controlled attenuation parameter, along with better blood vessel function and heart performance. For instance, the flow-mediated dilation of the brachial artery and the coronary flow reserve significantly improved in those receiving the supplement.

Interestingly, while the placebo group did not show any improvements during the six-month period, the coenzyme Q10 group demonstrated a clear correlation between the reduction in liver fat and enhancements in micro- and macrovascular functions. These results suggest that coenzyme Q10 could potentially be a beneficial treatment option for those battling MASLD.

Improved liver health

Most Useful Review

3049 people found this helpful

I want to share my experience with coenzyme Q10. I noticed numbness in my legs while sitting for long hours. After taking coenzyme Q10 daily for over two years, along with fish oil, my liver responded well, and the nocturnal pain diminished. I recently made a long car trip without leg issues, and I no longer feel cold in winter. Coenzyme Q10 has had a remarkable impact on my health, so I recommend trying it!

Updated: Apr 2025

Arthritis details

CoQ10 shows promise for RA

Based on 15 Researches

Nachvak SM, Alipour B, Mahdavi AM, Aghdashi MA, Abdollahzad H, et al. Effects of coenzyme Q10 supplementation on matrix metalloproteinases and DAS-28 in patients with rheumatoid arthritis: a randomized, double-blind, placebo-controlled clinical trial. Clin Rheumatol. 2019;38:3367. doi:10.1007/s10067-019-04723-x

We explored the effects of Coenzyme Q10 (CoQ10) supplementation on rheumatoid arthritis (RA) patients in a well-structured study. Fifty-four individuals diagnosed with RA were divided into two groups: one received 100 mg of CoQ10 daily, while the other group received a placebo for two months. This randomized and double-blind setup helped ensure that the findings would be credible and free from bias.

Our findings revealed some noteworthy changes in the CoQ10 group. There was a significant reduction in serum levels of matrix metalloproteinase-3 (MMP-3), which is linked to inflammation and tissue remodeling, alongside improvements in clinical indicators like swollen joint count and the disease activity score (DAS-28). Essentially, participants taking CoQ10 experienced a decrease in pain levels and tenderness in their joints, suggesting that CoQ10 may offer additional benefits for managing RA symptoms.

However, the study also showed slight improvements in the placebo group, indicating that factors like natural variability and placebo effects could play a role in treatment outcomes. While CoQ10 touted some advantages over the placebo, the reduction in MMP-3 levels signifies a potentially therapeutic area worth further exploration.

In conclusion, CoQ10 may serve as a complementary approach for those dealing with the challenges of rheumatoid arthritis, supporting both clinical symptoms and biomarkers of inflammation.

Mobility assistance

Most Useful Review

I suffer from arthritis, and CoQ10 helps with my joint mobility. This product is excellent quality, and I am very satisfied with the results.

Updated: Mar 2026

Asthma details

CoQ10 levels low in asthma

Gazdik F, Gvozdjakova A, Horvathova M, Weissova S, Kucharska J, et al. Levels of coenzyme Q10 in asthmatics. Bratisl Lek Listy. 2002;103:353.

We investigated how coenzyme Q10 (CoQ10), an antioxidant, influences individuals with asthma. In our study, we enrolled 56 patients with asthma and compared them to a control group of 25 healthy volunteers. This approach allowed us to assess the differences in antioxidant levels, particularly focusing on CoQ10, alpha-tocopherol, beta-carotene, and malondialdehyde (a marker of oxidative stress).

Our findings revealed that both CoQ10 and alpha-tocopherol levels were significantly lower in asthma patients compared to healthy individuals. Interestingly, while the level of malondialdehyde was higher in asthmatics, it did not reach statistical significance. We also found that the concentration of CoQ10 had a positive correlation with alpha-tocopherol levels, suggesting that they may work together in the body's defense against oxidative stress.

Ultimately, these results suggest that having lower levels of CoQ10 might contribute to an imbalance in antioxidants among asthma patients. Though the study highlights a potential link, it is crucial to note that we did not demonstrate a direct therapeutic benefit as we did not isolate CoQ10's effects from other treatments. Future research could further explore the role of CoQ10 supplementation in managing asthma symptoms.

Better asthma control

Most Useful Review

This has helped in keeping my asthma under control, so I don't need my inhalers as frequently.

Updated: Mar 2026

Bacterial Infection details

Healing gum infections

4 people found this helpful

Very effective in alleviating periodontitis and persistent gum infections. I struggled with periodontitis for a decade, despite careful hygiene and regular dentist visits. After starting Coenzyme Q10 at 100 mg twice daily two months ago, my gums began healing by day two. My previously shaky tooth is now firm, and I've had no infections since starting this supplement. Moreover, my palpitations have significantly decreased. I'm incredibly grateful to have discovered this!

Prevented gluten poisoning

Celiac details

I am very pleased with the purchase; it is gluten free, which is essential for me to avoid poisoning my body.

This remedy is indispensable in our cold region. My entire family has been taking it from September to May, and we’re getting sick far less often.

Common Cold details

Erectile Dysfunction details

CoQ10 improves erectile function

Safarinejad MR. Safety and efficacy of coenzyme Q10 supplementation in early chronic Peyronie's disease: a double-blind, placebo-controlled randomized study. Int J Impot Res. 2010;22:298. doi:10.1038/ijir.2010.20

We conducted a randomized, double-blind, placebo-controlled study to investigate the effectiveness of coenzyme Q10 (CoQ10) in treating erectile dysfunction (ED) in men diagnosed with early chronic Peyronie's disease (PD). A total of 186 participants took part, with half receiving 300 mg of CoQ10 daily and the other half receiving a placebo over a 24-week period.

Throughout the study, we regularly assessed various factors such as erectile function, pain during erection, plaque volume, and penile curvature. We also used a patient satisfaction questionnaire to gauge overall treatment satisfaction.

After 24 weeks, we observed significant improvements in erectile function and reduced pain for those taking CoQ10. Specifically, the CoQ10 group showed a notable increase in mean erectile function scores and a decrease in plaque size and penile curvature. In contrast, patients in the placebo group experienced disease progression more frequently.

Overall, our study suggests that CoQ10 supplements may effectively reduce symptoms related to ED in men suffering from Peyronie's disease. This potential advancement could offer hope for those still seeking effective treatments for this condition.

Erectile dysfunction relief

Most Useful Review

I have repurchased this product multiple times as my heart felt uncomfortable due to erectile dysfunction. After taking it, I have noticed significant improvement.

Updated: Mar 2026

Frozen Shoulder details

1 people found this helpful

Since taking Q10 100 Mg, my muscles and shoulder joints, which were suffering from frozen shoulder due to statin use, have improved significantly. I can now move normally again.

Hypothyroidism details

CoQ10 levels and thyroid health

Based on 4 Researches

Pandolfi C, Ferrari D, Stanic I, Pellegrini L. [Circulating levels of CoQ10 in hypo- and hyperthyroidism]. Minerva Endocrinol. 1994;19:139.

We evaluated the levels of Coenzyme Q10 (CoQ10) in patients with hypothyroidism and hyperthyroidism to understand its role in thyroid health. The study included participants from both groups, as well as a control group without thyroid issues, ensuring that no subjects had other cardiovascular or metabolic diseases that could interfere with the results.

Our findings showed that hypothyroid patients had a higher average level of CoQ10 in their blood compared to those with hyperthyroidism. Specifically, hypothyroid patients showed levels of 0.97 mcg/ml, while hyperthyroid patients had only 0.51 mcg/ml, with the control group at 0.73 mcg/ml. This suggests that patients with hypothyroidism may have a greater prevalence of higher CoQ10 levels.

However, we found that the differences were not enough to clearly separate those with normal thyroid function from those with either hypothyroidism or hyperthyroidism. While there is a noted inverse relationship between CoQ10 levels and certain thyroid hormones, this indicates that CoQ10 alone may not provide significant benefits for those specifically dealing with hypothyroidism. More research—especially longitudinal studies—is needed to see how treatment and therapy could potentially affect CoQ10 levels and overall thyroid health in these patients.

Supports thyroid recovery

Most Useful Review

2 people found this helpful

I have bought this product multiple times for heart health. My husband has taken it for over five years, witnessing substantial improvement in his heart condition. I started it this year for my hypothyroidism and hyperlipidemia, and it appears to aid in restoring thyroid function while protecting cardiovascular health.

Updated: Mar 2026

Irritable Bowel Syndrome details

Life-changing effects

14 people found this helpful

The effect is instant! For three weeks, I've taken two capsules (200 mg) after breakfast, following the advice in “Ever Tired” on chronic fatigue syndrome. On the first day, I recognised the stark difference between being "tired" and having "no strength." For years, I'd lived with constant muscle fatigue, resembling post-workout exhaustion. Now, I feel energised, even when fatigued, and can manage daily tasks without collapsing into bed. My clarity of thought has sharpened, and I'm more confident driving after a long day. Bonus: my complexion has improved, and my skin is more hydrated. I ordered more and hope my experience aids others, especially where chronic fatigue syndrome treatment is lacking.

Obesity details

CoQ10 affects bile acid metabolism

Based on 6 Researches

Jin M, Zou T, Huang H, Chen M, Zou H, et al. The Effect of Coenzyme Q10 Supplementation on Bile Acid Metabolism: Insights from Network Pharmacology, Molecular Docking, and Experimental Validation. Mol Nutr Food Res. 2024;68:e2400147. doi:10.1002/mnfr.202400147

We explored how Coenzyme Q10 (CoQ10) supplementation affects bile acid metabolism and its potential implications for obesity. The study focused on mice fed a high-fat diet to simulate conditions related to obesity and glycolipid disorders. By utilizing advanced techniques, including Ultra-Performance Liquid Chromatography-tandem Mass Spectrometry, we assessed the impact of CoQ10 treatment.

Our findings revealed that CoQ10 not only helped reverse the decrease in serum and colonic bile acid levels associated with a high-fat diet but also altered the bile acid profile positively. We identified seventeen potential targets for CoQ10's action in bile acid metabolism, with six key targets being especially vital to the observed effects. Notably, CoQ10 showed a strong binding affinity to five of these key targets, including the farnesoid X receptor (FXR) and Takeda G-protein coupled receptor 5 (TGR5).

Through this research, we gained valuable insights into how CoQ10 can potentially regulate bile acid metabolism. These findings provide a new perspective on utilizing CoQ10 for enhancing metabolic health, particularly concerning obesity and related metabolic disorders.

Weight loss aid

Most Useful Review

I was amazed by Coenzyme Q10's effects, especially regarding weight loss and rejuvenation. It helps normalise metabolic functions and makes losing weight easier. I’ve lost more weight with it and appreciate how it improves skin texture, although the rejuvenating effects are gradual. I highly recommend it!

Updated: Mar 2026

Tinnitus details

8 people found this helpful

Sleep has greatly improved for my mother, aged 58, who has endured ten years of fatigue and tinnitus. After discovering coenzyme Q10, her energy levels have soared without the constant tiredness. She now feels powerful and revitalised.

Coenzyme Q10 is essential in my home. Staying up late used to strain my heart, but taking it after meals helps. It also cured my dog’s frequent coughs—he’s never coughed again since taking it. I trust this brand and will repurchase.

Whooping Cough details

Adrenal Gland Disorder details

Huge difference! As a mother of three working full-time, I was constantly run down and susceptible to every infection my kids brought home. Despite getting plenty of rest, I remained tired. My instincts told me my adrenals were involved, so I researched adrenal fatigue and began taking Eleuthero, Astragalus, CoEnzyme Q10, D-Ribose, and a general multivitamin. The improvement has been astounding. We are two months into winter in Australia, and usually, I would have had at least three severe chest infections by now, but I haven't had a single one. I occasionally felt a cold coming on, but it vanished by the following day. My immune system is undeniably strong. I will continue with this combination and appreciate iHerb's low-cost international shipping!

Anemia details

Coenzyme Q10 aids anemia treatment

Based on 7 Researches

Lynch RE, Hammar SP, Lee GR, Cartwright GE. The anemia of vitamin E deficiency in swine: an experimental model of the human congenital dyserythropoietic anemias. Am J Hematol. 1977;2:145.

We explored the characteristics of anemia caused by vitamin E deficiency in pigs to see how it might serve as a model for human congenital dyserythropoietic anemia (CDA). In this study, we found that the main issue in these pigs was ineffective erythropoiesis, similar to what some humans experience with CDA.

Strikingly, we observed increases in certain erythrocyte enzymes in these pigs, paralleling changes noted in CDA patients. In the animals, distinctive structural alterations similar to those seen in human cases were present in normoblasts, the precursors to red blood cells.

A notable finding was that administering coenzyme Q10, alongside vitamin E, led to a complete hematologic response in the pigs. This suggests that coenzyme Q10 could play a significant role in addressing anemia related to vitamin E deficiency. However, the partial response noted after adjusting the diet indicates that there may be more factors at play in this disorder’s development.

Overall, coenzyme Q10 appears to have a beneficial impact on treating anemia in this swine model, indicating potential avenues for further research in human applications.

7.5

Increased energy

Most Useful Review

2 people found this helpful

Doctors Best High Absorption coQ10 has significantly boosted my energy levels. I have thalassemia anemia, which isn't treatable with medications, but this product is quite affordable and helps me a great deal.

Updated: Mar 2026

Chronic Cough details

38 people found this helpful

I really want to eat a lifetime supply of this! I used to suffer from chronic fatigue, but after taking CoQ10 for just 2-3 days, I felt a surge of energy. I wished to consume it continuously, like in Korea. It’s expensive back home, and I don’t want to deal with that. This supplement has been a lifesaver for chronic fatigue—I would rate it a million stars!

Depression details

Q10 alleviates post-stroke depression

Based on 13 Researches

Fatemi I, Saeed Askari P, Hakimizadeh E, Kaeidi A, Esmaeil Moghaddam S, et al. Chronic treatment with coenzyme Q10 mitigates the behavioral dysfunction of global cerebral ischemia/reperfusion injury in rats. Iran J Basic Med Sci. 2022;25:39. doi:10.22038/IJBMS.2022.57630.12865

We explored the effects of Coenzyme Q10 (Q10) on depression and cognitive deficits following global cerebral ischemia/reperfusion (I/R) injury in rats. In this study, we induced brain injury by blocking blood flow to both carotid arteries for 20 minutes. The rats then received Q10 at a dose of 200 mg/kg for six weeks.

The results illustrated that the I/R injury led to increased anxiety and depressive behaviors in the animals, alongside a noticeable decline in cognitive performance. Moreover, we found that the levels of brain-derived neurotrophic factor (BDNF) and the activity of superoxide dismutase (SOD) were reduced after the stroke.

Upon treating with Q10, we observed significant improvements. The treatment not only decreased brain swelling but also lessened anxiety and depressive-like symptoms. Cognitive impairments improved as well, with increased BDNF levels and SOD activity in the brain tissues of the animals receiving Q10.

Ultimately, this study points to the potential benefits of Q10 supplementation in mitigating symptoms of depression and cognitive issues after a stroke.

Energises and uplifts

Most Useful Review

1 people found this helpful

Since taking CoQ10, I've experienced a significant boost in energy and am in a much better mood, alleviating my previous feelings of depression. I’m very pleased with this purchase and its positive effects.

Updated: Mar 2026

Knee Pain details

Rat study shows CoQ10 reduces osteoarthritis pain and inflammation

Lee J, Hong YS, Jeong JH, Yang EJ, Jhun JY, et al. Coenzyme Q10 ameliorates pain and cartilage degradation in a rat model of osteoarthritis by regulating nitric oxide and inflammatory cytokines. PLoS One. 2013;8:e69362. doi:10.1371/journal.pone.0069362

Researchers created an experimental knee osteoarthritis model in rats and tested whether oral CoQ10 could ease pain and slow cartilage breakdown. CoQ10 treatment successfully reduced pain sensitivity and prevented cartilage degradation by dampening inflammatory molecules that drive the disease. The supplement worked by lowering levels of key pain-promoting proteins, including matrix metalloproteinase-13 and inflammatory cytokines like IL-1β and IL-6. These findings suggest CoQ10 may offer a protective mechanism against osteoarthritis progression through inflammation control.

Reduced leg pain

Most Useful Review

2 people found this helpful

I take pills for cholesterol that cause leg pain. This supplement, taken as one capsule each morning, almost entirely prevents the discomfort. After trying to stop, the pain returned a few days later, confirming its effectiveness.

Updated: Apr 2026

Mild Cognitive Impairment details

8 people found this helpful

Cognitive improvement with CoQ10 My father has Parkinson's and now dementia, and his condition was rapidly deteriorating until he started taking CoQ10. His cognition has noticeably improved, and it's as though we have our father back. Even if this product only halts the decline temporarily, we are very grateful for this time together.

Good and effective. It reduces wrinkles and beautifies my skin, improves fatigue, helps relieve migraines, supports sarcopenia, and manages my polycystic ovary syndrome. It has even proven beneficial for Parkinson's disease.

Polycystic Ovary Syndrome details

CoQ10 aids stroke recovery

Stroke details

Mojaver A, Khazaei M, Ahmadpanah M, Zarei M, Soleimani Asl S, et al. Dietary intake of coenzyme Q10 reduces oxidative stress in patients with acute ischemic stroke: a double-blind, randomized placebo-controlled study. Neurol Res. 2025. doi:10.1080/01616412.2025.2470712

We investigated the potential benefits of coenzyme Q10 (CoQ10) supplementation in patients recovering from acute ischemic stroke. In this double-blind, randomized placebo-controlled study, fifty hospitalized patients were divided into two groups; one received 600 mg of CoQ10 daily for 30 days, while the other received a placebo starting 24 hours post-stroke.

Our findings revealed notable improvements among those taking CoQ10. The group supplemented with CoQ10 showed significant reductions in harmful substances linked to oxidative stress, such as malondialdehyde (MDA) and inflammatory interleukin-6 (IL-6). Additionally, we observed increases in beneficial antioxidants, including superoxide dismutase (SOD) and brain-derived neurotrophic factor (BDNF), suggesting that CoQ10 may aid in neuroprotection and recovery after a stroke.

While some biomarkers did not show significant change, the overall results suggest that CoQ10 could be a valuable addition to rehabilitation programs for stroke patients, potentially improving recovery outcomes.

Prevents heatstroke

Most Useful Review

6 people found this helpful

I find Coenzyme Q10 essential for surviving summer in Japan as it helps with my weak autonomic nervous system. Taking it after breakfast has prevented heatstroke during my commutes, which I previously suffered from.

Updated: Mar 2026

Allergies details

Co-Q10 aids allergic reaction control

Du Q, Meng W, Athari SS, Wang R. The effect of Co-Q10 on allergic rhinitis and allergic asthma. Allergy Asthma Clin Immunol. 2021;17:32. doi:10.1186/s13223-021-00534-5

We investigated how coenzyme Q10 (Co-Q10) affects allergies, particularly allergic rhinitis and asthma. In our study, we used animal models to mimic these conditions and treated them with Co-Q10, either alone or alongside other compounds like Omega-3 and magnesium sulfate.

We collected and analyzed samples from the lungs, measuring various inflammatory markers such as cytokines and IgE levels, which play critical roles in allergic reactions. The results indicated that Co-Q10 helps promote the activity of a protective protein called Nrf2, which is crucial in defending against allergic responses and inflammation.

By increasing Nrf2 levels, Co-Q10 showed potential in reducing the symptoms associated with allergic conditions, helping to control allergic mediators and inflammatory factors. Overall, we found that Co-Q10 treatment could enhance the body’s resilience to allergens, potentially offering a powerful tool against allergic rhinitis and asthma.

Skin allergy relief

Most Useful Review

This is quite good! I’m not certain if it’s the CoQ10, but my skin allergy improved after taking it. I mainly use it for pregnancy, but it’s been beneficial for my allergies as well.

Updated: Mar 2026

Angina details

Coenzyme Q10 improves angina symptoms

Kuimov AD, Murzina TA. [Coenzyme q10 in complex therapy of patients with ischemic heart disease]. Kardiologiia. 2013;53:40.

We focused on the effectiveness and safety of coenzyme Q10 as a treatment for patients dealing with ischemic heart disease and stable angina, specifically those at class II-III levels. Over the course of eight weeks, participants took a daily dosage of 60 mg of coenzyme Q10 alongside their standard treatment regimen.

The results were promising; we observed that patients reported significant improvements in their clinical status related to angina symptoms. Importantly, this improvement occurred without any major side effects, indicating that coenzyme Q10 could be a beneficial addition to the treatment plan for those living with this condition.

However, it is essential to note that since coenzyme Q10 was used in conjunction with standard treatments, it is challenging to pinpoint its isolated effects conclusively. Future studies could help clarify how well coenzyme Q10 works on its own, but for now, the findings suggest it may be a valuable component of therapy for angina.

7.5

Angina improved

Most Useful Review

1 people found this helpful

After a month of taking coenzyme Q10, I began to feel much better. It helped alleviate my angina symptoms in just two days, and my blood pressure normalised. The price is very reasonable for the quality delivered.

Updated: Mar 2026

Anxiety details

Q10 reduces heat stress-induced anxiety

Mahmoudi J, Kazmi S, Vatandoust S, Athari SZ, Sadigh-Eteghad S, et al. Coenzyme Q10 and vitamin E alleviate heat stress-induced mood disturbances in male mice: Modulation of inflammatory pathways and the HPA axis. Behav Brain Res. 2025;476:115259. doi:10.1016/j.bbr.2024.115259

We explored the effects of coenzyme Q10 (Q10) on anxiety symptoms caused by heat stress in male mice. The study involved several groups of mice, exposing them to high temperatures while treating them with either Q10, vitamin E, or a combination of both for two weeks. We assessed their mood through various tests that measure anxiety and despair behavior, including the forced swimming test and the elevated plus maze.

Our findings indicated that both Q10 and vitamin E had significant anxiolytic traits on the mice affected by heat stress. This means that these treatments effectively reduced anxiety levels. Not only did they show positive changes in behavior during the anxiety tests, but we also observed a notable decrease in stress hormone levels. Additionally, the treatments seemed to lower inflammatory markers in the brain, suggesting a possible pathway for their effectiveness.

In summary, incorporating Q10 into treatment strategies could offer an innovative way to address anxiety, especially in situations involving environmental stressors like extreme heat. We advocate further investigation into how these findings might translate into human applications, particularly for managing stress-induced anxiety.

Stronger heart

Most Useful Review

1 people found this helpful

My mum and I have experienced excellent results. She has a weak heart, and I struggle with anxiety and palpitations. This CoQ10 variant calms me and strengthens my mum’s heart, as confirmed by our specialist. The Bioperine enhances absorption.

Updated: Mar 2026

Arteriosclerosis details

CoQ10 influences cholesterol management

Based on 15 Researches

Allen RM, Vickers KC. Coenzyme Q10 increases cholesterol efflux and inhibits atherosclerosis through microRNAs. Arterioscler Thromb Vasc Biol. 2014;34:1795. doi:10.1161/ATVBAHA.114.303741

We explored the effects of a popular supplement called Coenzyme Q10 (CoQ10) on atherosclerosis, specifically how it influences cholesterol levels in macrophages. Through recent research, we found that CoQ10 inhibits c-Jun expression and hinders the activity of a protein complex known as AP-1. This complex typically boosts the production of a microRNA called miR-378.

miR-378 is significant because it directly targets ABCG1, a transporter that helps in the removal of cholesterol from cells. When the suppression of miR-378 is lifted, cholesterol efflux increases, providing a protective effect against atherosclerosis in mice. This study emphasizes the connections between CoQ10, cholesterol management, and overall heart health.

By understanding these connections better, we can appreciate the potential of CoQ10 as a supportive treatment for conditions like atherosclerosis. The findings open up interesting possibilities for future research and practical applications in addressing heart disease.

7.5

Improves circulation

Most Useful Review

This product has been repurchased for my husband, who suffers from high blood pressure. Coenzyme Q10 can help prevent arteriosclerosis and enhance body circulation.

Updated: Mar 2026

Bloating details

This product has significantly improved my digestion and intestinal health. I noticed a difference; while I went to the bathroom more frequently, I also experienced relief from bloating and gas. I've read it supports brain health and combats lethargy. The taste is acceptable, and they come in vegetable capsules, which are good for heart health too.

Improved bruise condition

Bruise details

I ordered this for my mother, who has issues with blood vessels and gets bruises easily. After taking it with vitamin C, her condition improved, along with decreased weather sensitivity and stabilised blood pressure. Studies show that Coenzyme Q10 can reduce inflammation in blood vessels and is crucial for conditions like diabetes and cancer. My mother will continue this supplement.

Menopause details

CoQ10 enhances cognitive function

Based on 3 Researches

Sandhir R, Sethi N, Aggarwal A, Khera A. Coenzyme Q10 treatment ameliorates cognitive deficits by modulating mitochondrial functions in surgically induced menopause. Neurochem Int. 2014;74:16. doi:10.1016/j.neuint.2014.04.011

We aimed to understand how cognitive decline occurs after menopause, particularly due to decreased ovarian function and estrogen. To explore this, we studied the effects of Coenzyme Q10 (CoQ10), a substance known for its potential health benefits, on cognitive impairment in post-menopausal mice.

After four weeks of ovariectomy, which simulates menopause, we observed significant cognitive deficits in the mice, as measured by popular tests like the Morris water maze and elevated plus maze. However, when we gave these mice CoQ10 daily for four weeks, we saw a remarkable improvement in their cognitive functions.

We also investigated the underlying reasons for this decline by looking at mitochondrial functions in the brain. Our findings revealed that the activity of several key components of the mitochondrial electron transport chain was significantly reduced in the ovariectomized mice. These changes were associated with increased oxidative stress, indicated by high levels of reactive oxygen species and protein damage.

Interestingly, CoQ10 supplementation helped mitigate these mitochondrial dysfunctions and oxidative stress, leading to improved cognitive performance in the mice. Therefore, it seems that CoQ10 has a positive effect in addressing cognitive decline related to menopause by supporting mitochondrial health and reducing oxidative stress.

Blood pressure relief

Most Useful Review

21 people found this helpful

I have been taking blood pressure medication for three years and successfully managed it with exercise and nutritional supplements. After starting CoQ10, my blood pressure dropped by 5-10 points and remained stable. It significantly reduced gum inflammation and strengthened my teeth. At 55, my skin has become soft and hydration has improved, making it ideal for those concerned about skin and blood pressure during menopause. I encourage everyone to care for their CoQ10 and stay healthy.

Updated: Mar 2026

Osteoporosis details

CoQ10 mitigates SCI-induced osteoporosis

Based on 9 Researches

Zhang XX, Qian KJ, Zhang Y, Wang ZJ, Yu YB, et al. Efficacy of coenzyme Q10 in mitigating spinal cord injury-induced osteoporosis. Mol Med Rep. 2015;12:3909. doi:10.3892/mmr.2015.3856

We aimed to understand how coenzyme Q10 (CoQ10) might help combat osteoporosis caused by spinal cord injuries (SCI). In our study, we induced SCI in rats by surgically transecting the spinal cord at the T10-12 level and began treating them with CoQ10 daily, starting just 12 hours after the procedure. This treatment lasted for 10 consecutive days, allowing us to evaluate its effects on bone health.

Our findings showed that CoQ10 effectively prevented the loss of bone density and mineral content typically seen in rats following SCI. We observed a notable reduction in harmful substances that damage bone, alongside an increase in protective factors. Furthermore, CoQ10 appeared to reduce inflammation in the affected rats, which is crucial since inflammation can worsen bone health.

We also examined the genetic changes associated with bone formation and found that CoQ10 backup significantly restored the balance between bone-building and bone-resorbing cells. Overall, our study suggests that CoQ10 can be a helpful intervention in mitigating osteoporosis linked to spinal cord injuries, offering hope for future treatments in similar conditions.

7.5

Active preparation

Most Useful Review

Excellent! The preparation for osteoporosis and arthrosis protocols is very active, although it is generally used after the age of 35.

Updated: Mar 2026

Parkinson details

CoQ10 boosts motor function in mice

Based on 12 Researches

Takahashi K, Ohsawa I, Shirasawa T, Takahashi M. Early-onset motor impairment and increased accumulation of phosphorylated α-synuclein in the motor cortex of normal aging mice are ameliorated by coenzyme Q. Exp Gerontol. 2016;81:65. doi:10.1016/j.exger.2016.04.023

We examined how coenzyme Q10 (CoQ10) treatment impacts age-related motor issues and changes related to Parkinson's disease in mice. Aged mice displayed reduced motor functions and increased levels of a harmful protein, α-synuclein, in their brains compared to younger mice.

By giving aged mice CoQ10 in their drinking water, we found that their motor abilities improved significantly, and the harmful protein levels decreased. These findings suggest that CoQ10 can positively influence motor function and may help address early signs of Parkinson-like changes in the brain.

Cognitive improvement

Most Useful Review

8 people found this helpful

Cognitive improvement with CoQ10. My father has Parkinson's and now dementia, and he was rapidly deteriorating until he began taking CoQ10. His cognition has improved, and it's as if we've got our father back. Even if this product only pauses the process for a short time, we are grateful for this period.

Updated: Mar 2026

Pelvic Pain details

4 people found this helpful

I highly recommend this product for the elderly and those suffering from arthritis and muscle inflammation. My back and joint pain improved significantly after taking 200 mg daily for over a month.

Prostate Cancer details

Coenzyme Q10 effects on prostate cancer

Likely Ineffective

Based on 4 Researches

Quiles JL, Farquharson AJ, Ramírez-Tortosa MC, Grant I, Milne L, et al. Coenzyme Q differentially modulates phospholipid hydroperoxide glutathione peroxidase gene expression and free radicals production in malignant and non-malignant prostate cells. Biofactors. 2003;18:265.

We explored the effects of coenzyme Q10 on prostate cancer by investigating its impact on two cell lines: PNT2, which is non-cancerous, and PC3, which is cancerous. Our focus was on how this supplement influenced the levels of a specific protein called PHGPx and the production of reactive oxygen species (ROS), which are often linked to cancer progression.

We observed that the cancerous PC3 cells reacted quite differently to coenzyme Q10 compared to the non-cancerous PNT2 cells. There were no noticeable changes in the levels of PHGPx in the PC3 cells, yet we recorded a significant increase in ROS production. Additionally, coenzyme Q10 supplementation was found to reduce the growth of the cancerous PC3 line but did not impact the growth of the non-malignant PNT2 cells.

These findings suggest that coenzyme Q10 might offer a novel approach in cancer therapy, specifically for prostate cancer. However, further investigations are necessary to confirm these results before considering any clinical applications.

Increased energy focus

Most Useful Review

Doctor’s Best High Absorption CoQ10 with BioPerine is superb! I've noted increased energy, improved focus, and reduced mental fog. It enhances my overall wellbeing and supports my body. CoQ10 is an antioxidant that defends against free radical damage while BioPerine may help combat the growth of cancer cells and aids nutrient absorption.

Updated: Apr 2025

Back Pain details

Improved energy levels

39 people found this helpful

After a month of taking the coenzyme on my husband’s recommendation, we noticed significant changes. I started waking up before the alarm, feeling refreshed. My back pain and apathy lessened. Upon stopping the supplement after two months, the apathy returned, so we’re taking it in cycles. I find it easier to consume by pouring it into a spoon, despite the peppery taste.

Blood Clot details

CoQ10 reduces harmful blood clots

Ya F, Xu XR, Shi Y, Gallant RC, Song F, et al. Coenzyme Q10 Upregulates Platelet cAMP/PKA Pathway and Attenuates Integrin αIIbβ3 Signaling and Thrombus Growth. Mol Nutr Food Res. 2019;63:e1900662. doi:10.1002/mnfr.201900662

We explored how coenzyme Q10 (CoQ10), a natural compound found in various foods, impacts blood clotting functions. Through a well-structured study, we utilized a randomized, double-blind, placebo-controlled trial with dyslipidemic patients, alongside in vitro tests on human platelets.

Our findings demonstrated that CoQ10 effectively reduces platelet aggregation, granule secretion, platelet spreading, and clot retraction. This means that CoQ10 can help prevent excessive blood clot formation, which is crucial for cardiovascular health.

We observed that CoQ10 works mainly by enhancing a signaling pathway involving cyclic AMP (cAMP) which ultimately diminishes the signaling of integrin αIIbβ3, a key player in platelet function. In addition, the treatment showed promising results in reducing thrombus growth in an animal model, suggesting significant in vivo benefits as well.

This study highlights the potential of CoQ10 supplementation as a protective measure for individuals at risk of cardiovascular diseases by regulating platelet-related processes involved in clotting.

7.5

Stable blood pressure

Most Useful Review

26 people found this helpful

I bought this for my grandmother, who often experiences high blood pressure. After a month of taking CoQ10, these episodes have become much rarer. I highly recommend this product!

Updated: Mar 2026

Gastritis details

CoQ10 improves gastritis treatment

Rahmani A, Abangah G, Moradkhani A, Hafezi Ahmadi MR, Asadollahi K. Coenzyme Q10 in combination with triple therapy regimens ameliorates oxidative stress and lipid peroxidation in chronic gastritis associated with H. pylori infection. J Clin Pharmacol. 2015;55:842. doi:10.1002/jcph.508

We investigated the potential benefits of coenzyme Q10 (CoQ10) in treating chronic gastritis linked to H. pylori infection. In our clinical trial, we randomly divided 100 participants into two groups: one received a standard triple therapy regimen, while the other received the same treatment with the addition of CoQ10.

Our findings were promising. We observed a significant decrease in inflammation scores among those who took CoQ10 alongside the triple therapy compared to those who only received the base treatment. Additionally, we noted that the antioxidant levels in the CoQ10 group improved notably over the duration of the study. Specifically, the total antioxidant capacity and glutathione peroxidase levels were significantly better in the intervention group than at the start of the study.

Combining CoQ10 with standard treatment appeared to effectively address both mucosal inflammation and oxidative stress in patients suffering from chronic gastritis. This suggests a compelling advantage to including CoQ10 in treatment regimens for such conditions.

7.5

Stomach health

Most Useful Review

After a month of taking this dietary supplement, my heart feels calmer, and my energy levels have improved. Despite my gastritis concerns, I've taken it with food alongside a probiotic, and my stomach responds well. Additionally, my gums no longer bleed, which has been a pleasant surprise.

Updated: Mar 2026

Hypertension details

Citicoline and CoQ10 protection study

Matamoros JA, Rubio-Casado S, Fernández-Albarral JA, Martínez-López MA, Salobrar-García E, et al. Neuroprotective Effect of the Combination of Citicoline and CoQ10 in a Mouse Model of Ocular Hypertension. Antioxidants (Basel). 2024;14. doi:10.3390/antiox14010004

We investigated how a combination of citicoline and coenzyme Q10 (CoQ10) might impact retinal cell health in a mouse model of ocular hypertension (OHT). Using four groups of mice, including those receiving the combination treatment and a control group, we aimed to understand if these substances could protect against the loss of retinal ganglion cells, which is a major concern in glaucoma.

The treatment was started 15 days prior to inducing ocular hypertension with a laser and continued until we examined the mice about a week later. Our findings were promising: the combination of citicoline and CoQ10 led to a temporary reduction in eye pressure shortly after treatment. Furthermore, it significantly prevented the death of specific retinal cells that are vital for vision.

While we were encouraged by these results, especially regarding cell protection, it's important to note that there were no significant impacts on neurons in the visual pathway areas we studied, like the dLGN. Overall, our research suggests that this combination might offer neuroprotective benefits in specific aspects of ocular hypertension, paving the way for further exploration into treatments that go beyond only lowering eye pressure.

Reduced blood pressure

Most Useful Review

6 people found this helpful

I have experienced no hypertension issues lately; however, my blood pressure did rise while taking this product. My mother, who deals with hypertension, has benefited greatly and has stable blood pressure levels now. I always ensure to keep it on hand.

Updated: Mar 2026

Low Libido details

Sexual desire increased

Very good! The quality is excellent and it has increased my sexual desire, something I've noticed at the age of 37. However, the pill is quite large and challenging to swallow.

Excellent! My health has improved noticeably within two to three weeks of starting the supplement. Perhaps it’s coincidental, but managing premenstrual syndrome has become much easier for me. Overall, my bodily condition is impressive, and I appreciate the modest price. I also agree it pairs well with Omega-3.

Premenstrual Syndrome details

Psoriasis details

Coenzyme Q10 and psoriasis effects

Kocic H, Damiani G, Stamenkovic B, Tirant M, Jovic A, et al. Dietary compounds as potential modulators of microRNA expression in psoriasis. Ther Adv Chronic Dis. 2019;10:2040622319864805. doi:10.1177/2040622319864805

We examined the role of coenzyme Q10 in psoriasis treatment, focusing on its effects on microRNAs. The research highlighted the complex relationship between dietary compounds and the management of psoriasis, particularly through the modulation of specific microRNAs that are known to be implicated in the condition.

Among the findings, it was noted that the expression of miR-125b, which is often downregulated in psoriasis, can be restored by coenzyme Q10. This suggests a potential benefit of coenzyme Q10 in contributing to the overall balance of microRNAs in psoriasis.

However, the evidence remains part of a broader discussion about dietary influences on psoriasis, rather than a definitive conclusion about coenzyme Q10's standalone effectiveness. Therefore, while there is some promising data, we cannot assert that coenzyme Q10 works as a singular treatment for psoriasis without further comprehensive studies.

7.5

Positive results

Most Useful Review

1 people found this helpful

Psoriasis help so far, so good...

Updated: Mar 2026

Swollen Lymph Nodes details

Gum health improvement

At every dental checkup, issues of bleeding and swelling of the gums were noted, and I was advised to perform gum massages, but there was no improvement. However, since I began taking this supplement, both the bleeding and swelling have ceased. My dentist commended the outcome, affirming the effectiveness of the massage!

Ulcer details

CoQ10 improves UC symptoms

Based on 12 Researches

Farsi F, Ebrahimi-Daryani N, Barati M, Janani L, Karimi MY, et al. Effects of coenzyme Q10 on health-related quality of life, clinical disease activity and blood pressure in patients with mild to moderate ulcerative colitis: a randomized clinical trial. Med J Islam Repub Iran. 2021;35:3. doi:10.47176/mjiri.35.3

We explored the effects of coenzyme Q10 (CoQ10) on patients suffering from ulcerative colitis (UC), a condition characterized by chronic inflammation of the digestive tract. In this randomized clinical trial, 88 individuals were split into two groups: one received 200 mg of CoQ10 daily, while the other received a placebo, all over the course of 8 weeks.

Our findings were promising. We observed significant improvements in the health-related quality of life and a reduction in disease activity among those who took CoQ10. Specifically, scores measuring disease severity dropped noticeably, and both systolic and diastolic blood pressure decreased for participants on CoQ10. Conversely, there were no noteworthy changes in body measurements between the groups, indicating that the drug's influence was more about managing symptoms than affecting body weight or composition.

Overall, this study suggests that CoQ10 might be a valuable addition to treatment strategies for UC, enhancing patient well-being and potentially improving overall health outcomes. We advocate for further research to fully understand the benefits of CoQ10 in managing ulcerative colitis.

7.5

Reduced ulcer symptoms

Most Useful Review

4 people found this helpful

I recommend Coenzyme Q10 for heart health. The body may lack this coenzyme after 20 years, leading to a decline. It acts as an antioxidant and aids energy metabolism. I took it regularly after 40, but needed to increase my dose for energy and reduced heart discomfort. It is advisable to avoid taking it during an ulcer flare-up. This product from Doctor's Best is affordable and easy to swallow. I felt energised after increasing the dosage.

Updated: Mar 2026

Acne details

Supplement may ease isotretinoin side effects

Fabbrocini G, Cameli N, Lorenzi S, De Padova MP, Marasca C, et al. A dietary supplement to reduce side effects of oral isotretinoin therapy in acne patients. G Ital Dermatol Venereol. 2014;149:441.

We undertook a study to see if a dietary supplement containing gamma linolenic acid, vitamin E, vitamin C, beta-carotene, coenzyme Q10, and Vitis Vitifera could help reduce common side effects linked to oral isotretinoin treatment for acne. This treatment is well-known for causing dry skin, redness, and peeling—issues that can make patients less willing to stick with their medication.

To explore this, we worked with 48 patients suffering from nodular acne, splitting them into two groups. One group received isotretinoin alongside the dietary supplement, while the other group only took isotretinoin for a duration of six months. We carefully measured various factors, including acne severity, hydration levels, and skin conditions such as erythema and dryness. We also inquired about how often patients adhered to their prescribed treatment.

Our findings revealed that those who used the dietary supplement experienced fewer side effects compared to those who just took isotretinoin. Specifically, they reported less erythema and dryness, as well as feeling more hydrated overall. Additionally, we noted an increase in treatment adherence in the group that took the supplement. Thanks to its antioxidant and moisturizing properties, this dietary supplement could indeed be a helpful addition for anyone undergoing isotretinoin therapy, making the journey a bit easier for patients.

Reduced acne

Most Useful Review

3 people found this helpful

I found L-cysteine and vitamins effective together, as my skin has lightened, and my acne has greatly reduced!

Updated: Mar 2026

Diabetes details

If you suffer from headaches or high blood pressure, I highly recommend Coenzyme Q10. It has significantly improved my stamina and reduced headaches that plagued me for years. After two months of use, my pressure normalised, and I could stand up more than 60 times without issues.

Sleep Apnea details

Likely Ineffective

CoQ10 ineffective for mitochondrial sleep apnea

Tatsumi C, Takahashi M, Yorifuji S, Nishikawa Y, Kitaguchi M, et al. Mitochondrial encephalomyopathy with sleep apnea. Eur Neurol. 1988;28:64.

We examined a rare case of mitochondrial encephalomyopathy featuring multiple complications including sleep apnea, cerebellar ataxia, and peripheral neuropathy—a combination never before documented in medical literature. The patient received six months of coenzyme Q10 therapy to address the underlying mitochondrial dysfunction.

Unfortunately, the treatment proved ineffective. Neither the cerebellar ataxia nor the abnormal pyruvate metabolism improved with CoQ10 supplementation. While sleep apnea was identified as a significant prognostic factor in this mitochondrial disorder, the supplement failed to alleviate this serious breathing complication or other associated symptoms.

Better sleep achieved

Most Useful Review

3 people found this helpful

I've been taking it at night, and it has noticeably improved my sleep. My weekly migraines are also gone, which contributes positively to my sleep apnea condition.

Updated: Apr 2026

Alzheimer details

Ubiquinol may combat Alzheimer's effects

Based on 16 Researches

Llanos-González E, Sancho-Bielsa FJ, Frontiñán-Rubio J, Rabanal-Ruíz Y, García-Carpintero S, et al. Spatial and Temporal Protein Modules Signatures Associated with Alzheimer Disease in 3xTg-AD Mice Are Restored by Early Ubiquinol Supplementation. Antioxidants (Basel). 2023;12. doi:10.3390/antiox12030747

We explored the effects of ubiquinol, a form of coenzyme Q10, on Alzheimer's disease through a model using 3xTG-AD mice. Our research aimed to understand how disrupted protein modules in the brain correlate with the progression of Alzheimer's, particularly in terms of oxidative stress and protein regulation.

By employing advanced techniques like MALDI-MSI and functional bioinformatics, we examined how these protein modules are altered based on the age of the mice. We found significant deregulation in specific protein modules related to oxidative stress and metabolism, especially in the hippocampus of younger mice (6 months old) and in the cortical regions of older mice (12 months old). This suggests that early intervention might be crucial to address these changes.

Remarkably, we observed that introducing ubiquinol at an early stage could help restore these protein modules back to a healthier state. This is exciting because it means dietary adjustments, particularly an increase in ubiquinol, could be beneficial in preventing the progression of Alzheimer’s symptoms, both in mice and potentially in humans.

Our findings not only highlight the impact of early dietary intervention but also reinforce the significance of exploring coenzyme Q10 and its benefits for brain health as we age. We believe these insights could pave the way for promising new strategies to combat Alzheimer's disease.

Supports brain function

Most Useful Review

2 people found this helpful

Coenzyme Q10 enhances endurance, aids recovery from exertion, and is beneficial for athletes. It supports heart health by maintaining blood vessel elasticity, reducing blood pressure spikes. Furthermore, it promotes energy in brain cells, aiding information retention and potentially delaying Alzheimer progression. Even in the presence of such conditions, it may slow their advancement. This substance indirectly supports immune function and accelerates collagen synthesis.

Updated: Apr 2025

Autoimmune Disorder details

Idebenone improves lupus symptoms

Based on 14 Researches

Blanco LP, Pedersen HL, Wang X, Lightfoot YL, Seto N, et al. Improved Mitochondrial Metabolism and Reduced Inflammation Following Attenuation of Murine Lupus With Coenzyme Q10 Analog Idebenone. Arthritis Rheumatol. 2020;72:454. doi:10.1002/art.41128

We explored the potential benefits of idebenone, a synthetic analog of coenzyme Q10, in treating autoimmune disorders, specifically lupus, in mouse models. By administering idebenone to mice with lupus for eight weeks, we aimed to investigate its impact on disease activity and organ damage.

Our findings showed that idebenone led to a significant reduction in disease severity. Mice that received idebenone exhibited lower mortality rates and improvements in kidney function, indicated by reduced glomerular inflammation and lower levels of certain inflammatory markers. The treatment also minimized the production of proinflammatory cytokines and enhanced mitochondrial metabolism.

Besides benefiting the kidneys, idebenone diminished markers of inflammation throughout the body, which is crucial since lupus often results in systemic damage. Importantly, we noticed that idebenone improved overall metabolism in these mice without causing obvious side effects.

This research supports the idea that modulating mitochondrial function can be a promising therapeutic strategy for managing lupus, opening the door for future studies on its effectiveness in humans.

Positive feedback

Most Useful Review

3 people found this helpful

I purchased this supplement for my mother and grandmother, both of whom are pleased with the results. Since it’s beneficial for older individuals, this is my third order.

Updated: Mar 2026

Blurred Vision details

Improved quality of life

1 people found this helpful

Coenzyme Q-10, often regarded as the battery, has significantly enhanced my 83-year-old mother's well-being. Despite her hypertension and heart issues, after commencing Q-10 and dietary supplements, she’s exhibited remarkable improvements. Her energy levels have soared, and while her blood pressure remains, the systolic figures have stabilised notably. This ubiquinone is integral to cellular energy production and helps mitigate issues like hypoxia and shortness of breath. Overall, her quality of life has greatly improved! We advocate Q-10 for older adults and active individuals, especially those on statins for cholesterol control. I hope our review assists others in making informed choices.

Cancer details

CoQ10 mitigates chemobrain effects

Hussein Z, Michel HE, El-Naga RN, El-Demerdash E, Mantawy EM. Coenzyme Q10 ameliorates cyclophosphamide-induced chemobrain by repressing neuronal apoptosis and preserving hippocampal neurogenesis: Mechanistic roles of Wnt/ β-catenin signaling pathway. Neurotoxicology. 2024;105:21. doi:10.1016/j.neuro.2024.08.003

We explored the potential benefits of Coenzyme Q10 (CoQ10) on cancer patients dealing with a condition commonly referred to as "Chemobrain," which is associated with treatment using the chemotherapy drug cyclophosphamide (CYP). In our study, male rats were given a daily dose of CoQ10 for ten days, while they also received a single dose of CYP to model the effects of chemotherapy on cognition and motor skills.

The findings were promising. CoQ10 not only helped counteract cognitive and motor dysfunctions triggered by CYP but also showed significant neuroprotective effects. Behavioral tests demonstrated improvements, and histopathological analysis confirmed that CoQ10 reduced brain damage linked to oxidative stress caused by CYP. This micronutrient effectively restored levels of the antioxidant enzyme catalase and lowered harmful substances like malondialdehyde.

Furthermore, CoQ10 appeared to inhibit neuronal apoptosis, or cell death, by balancing expressions of key proteins involved in the process. It supported neurogenesis in the hippocampus by increasing important growth factors. Most notably, CoQ10 activated the Wnt/β-catenin signaling pathway, which is crucial for brain health and development.

Overall, our study highlights how CoQ10 may offer a multi-faceted approach to mitigating the adverse effects of chemotherapy on cognitive function, bolstering both brain protection and regeneration.

Supports immunity

Most Useful Review

This powerful supplement is highly recommended by doctors to boost the immunity of cancer patients.

Updated: Apr 2025

Chest Pain details

CoQ10 reduces post-heart attack complications significantly

Singh RB, Wander GS, Rastogi A, Shukla PK, Mittal A, et al. Randomized, double-blind placebo-controlled trial of coenzyme Q10 in patients with acute myocardial infarction. Cardiovasc Drugs Ther. 1998;12:347.

A randomized, double-blind placebo-controlled trial compared 120 mg daily of coenzyme Q10 to placebo over 28 days in 144 heart attack patients. Those receiving CoQ10 experienced significantly fewer cases of chest pain, heart rhythm problems, and poor heart function compared to the placebo group. Importantly, major cardiac events—including heart deaths and repeat heart attacks—dropped to 15% with CoQ10 versus 31% with placebo.

We observed that CoQ10 treatment enhanced the body's natural antioxidant defenses and reduced markers of cellular damage. These results suggest CoQ10 may offer rapid protection when given shortly after a heart attack, though larger studies with longer follow-up are needed to fully confirm these encouraging findings.

7.5

Maintaining health

Most Useful Review

7 people found this helpful

Tops! This product has been fantastic for my minor to moderate cardiac symptoms. Despite a history of chest pain, I feel well and healthy. I prefer to maintain my health naturally rather than resorting to invasive procedures. My supplements, including this one, are essential for living an active, fulfilling life.

Updated: Apr 2026

Constipation details

Ubiquinol shows mixed effects

Suzuki S, Gotoda T, Kusano C, Ikehara H, Miyakoshi Y, et al. Effect of Ubiquinol Intake on Defecation Frequency and Stool Form: A Prospective, Double-Blinded, Randomized Control Study. J Med Food. 2019;22:81. doi:10.1089/jmf.2018.4233

We conducted a study to examine how coenzyme Q10, in its reduced form known as ubiquinol, might affect constipation in individuals dealing with daily abdominal discomfort. Using a robust, double-blind, randomized control design, we enlisted forty-one patients who experienced either constipation or diarrhea. Participants were split evenly into two groups, with one receiving 150 mg of ubiquinol each day for twelve weeks, while the other group received a placebo.

Over the course of the study, we had participants keep a daily diary to monitor their defecation frequency and the consistency of their stools, following the Bristol Stool Form Scale. After twelve weeks, we noticed some interesting changes. The ubiquinol group reported a slight decrease in defecation frequency, averaging -0.1 times a day, while the placebo group saw an increase of +0.3 times a day. However, there was no significant change in stool form for the ubiquinol group, while the placebo group’s scores improved.

On the brighter side, we also found that the ubiquinol group experienced a notable improvement in their overall health perception, reflected in their quality of life scores. In contrast, there were no significant changes in the placebo group’s scores. Overall, our findings suggest that ubiquinol may modify bowel habits and enhance the quality of life for patients suffering from abdominal distress, despite the small drop in defecation frequency among those taking it.

Restores microbiome

Most Useful Review

These probiotics are of excellent quality. They significantly help with constipation and are essential for gut health. The compact packaging contains powdered probiotics that noticeably improve digestion after just a week of use.

Updated: Mar 2026

Dizziness details

CoQ10's uncertain effects on dizziness

Kumar A, Kaur H, Devi P, Mohan V. Role of coenzyme Q10 (CoQ10) in cardiac disease, hypertension and Meniere-like syndrome. Pharmacol Ther. 2009;124:259. doi:10.1016/j.pharmthera.2009.07.003

We explored the potential benefits of coenzyme Q10 (CoQ10) in addressing dizziness associated with Meniere-like syndrome. CoQ10 is known to play a crucial role in energy production within cells, particularly those in the heart, and it has been observed to have various health benefits.

In our review of the available research, we noted that CoQ10 may help improve immune function, which can indirectly assist individuals experiencing symptoms like vertigo or dizziness. While there is recognition of CoQ10's positive effects on heart health, the specific impact on dizziness remains somewhat uncertain.

We found that although trials suggested improvements in various cardiovascular conditions, the isolated effectiveness of CoQ10 for treating dizziness specifically wasn't definitively established in the studies reviewed. Thus, we remain cautiously optimistic about its potential while emphasizing the need for further research.

Dizziness treated

Most Useful Review

I particularly love this product; after giving it to my mother, her dizziness and high blood pressure improved within two weeks. Highly recommend!

Updated: Mar 2026

Fibromyalgia details

Potential therapeutic for fibromyalgia

Based on 23 Researches

Cordero MD, Cotán D, del-Pozo-Martín Y, Carrión AM, de Miguel M, et al. Oral coenzyme Q10 supplementation improves clinical symptoms and recovers pathologic alterations in blood mononuclear cells in a fibromyalgia patient. Nutrition. 2012;28:1200. doi:10.1016/j.nut.2012.03.018

We explored the potential benefits of Coenzyme Q10 (CoQ10) for improving symptoms of fibromyalgia (FM) in a patient. Fibromyalgia is a challenging chronic pain condition with no clear cause, and recent research indicates that issues with mitochondrial function and oxidative stress might contribute to its symptoms.

In our observations, this patient exhibited low levels of CoQ10, which aligns with findings from other studies. After administering oral CoQ10 supplementation, the patient reported a noticeable improvement in her symptoms.

At the cellular level, we saw evidence that CoQ10 treatment helped restore mitochondrial function, increased the number of mitochondrial DNA copies, reduced oxidative stress, and boosted mitochondrial biogenesis. These changes suggest that CoQ10 may play a significant role in managing fibromyalgia symptoms and could be considered as an alternative therapeutic option for those suffering from this condition.

Positive effects noted

Most Useful Review

5 people found this helpful

This supplement has been invaluable for my fibromyalgia symptoms. I've tried various types on Iherb, and all have been excellent. It has helped regulate my heartbeat, and I find the packaging to be excellent value for its price and quality.

Updated: Apr 2026

Attention Deficit Hyperactivity Disorder details

Energy production support

9 people found this helpful

Coenzyme Q10 is present in all body tissues and is crucial for providing energy. It's particularly beneficial for those with heart problems. A friend’s mother, with serious heart issues, felt greatly improved after taking Q10, despite her unhealthy lifestyle. This supplement supports heart health and mitigates fatigue, chronic lethargy, and depression, making it essential for those over 40.

Chronic Fatigue Syndrome details

Ubiquinol-10 benefits chronic fatigue syndrome

Based on 15 Researches

Fukuda S, Nojima J, Kajimoto O, Yamaguti K, Nakatomi Y, et al. Ubiquinol-10 supplementation improves autonomic nervous function and cognitive function in chronic fatigue syndrome. Biofactors. 2016;42:431. doi:10.1002/biof.1293

We embarked on a study to investigate the impact of ubiquinol-10—an active form of coenzyme Q10—on patients suffering from chronic fatigue syndrome (CFS). Our research comprised two parts: an open-label study involving 20 patients and a randomized, double-blind, placebo-controlled trial with 43 participants.

In the open-label segment, patients took 150 mg of ubiquinol-10 daily for eight weeks, and both the participants and physicians knew who was receiving the supplement. The results were promising, suggesting improvements in various symptoms of CFS.

Following this, in the randomized trial, participants were assigned to either ubiquinol-10 or a placebo for 12 weeks, with neither the patients nor the doctors aware of who received which treatment. Outcomes showed that those taking ubiquinol-10 experienced significant benefits, reinforcing the notion that this supplement can positively influence CFS symptoms.

Overall, this study suggests that adding ubiquinol-10 to a treatment plan could be a helpful strategy for improving the lives of those dealing with chronic fatigue syndrome.

Boosted energy levels

Most Useful Review

177 people found this helpful

I experienced a surge of energy after a couple of months taking CoQ10. I found it easier to get up in the mornings and felt great during training. Most importantly, I no longer suffered from fatigue post-training, which I struggled with after my second child. I take 1 capsule daily. If this review helps, I’m pleased! Wishing you all health and energy!

Updated: Mar 2026

Cardiovascular Disease details

CoQ-10 reduces mortality, improves capacity

Based on 10 Researches

Qazi SU, Bin Naeem MA, Umar M, Zahid MJ, Kan Changez MI, et al. Evaluating the efficacy of ubiquinol in heart failure patients: a systematic review and meta-analysis. Future Cardiol. 2024;20:221. doi:10.1080/14796678.2024.2352308

We explored the effects of coenzyme Q10 (CoQ-10) on heart failure (HF) patients by analyzing past literature. Our systematic review examined studies from MEDLINE and the Cochrane Library, focusing on how CoQ-10 influences outcomes like HF-related mortality, exercise capacity, and left ventricular ejection fraction (LVEF).

The results from 16 studies showed some promising findings. CoQ-10 was found to significantly lower HF-related mortality by 40%, which is a notable benefit for patients. Additionally, we observed improvements in exercise capacity for those taking CoQ-10. However, when it came to the impact on LVEF, the results were not statistically significant. While there wasn’t a clear-cut improvement in LVEF, we acknowledge that this aspect needs further exploration to fully understand CoQ-10's potential.

In summary, CoQ-10 appears to be effective in reducing mortality rates and enhancing exercise capacity among heart failure patients. Nonetheless, the effect on LVEF is still uncertain and merits additional investigation.

Normalises blood pressure

Most Useful Review

2 people found this helpful

CoQ10 works wonders from the first use! It enhances cardiovascular health, improves skin condition, and increases vitality. My tachycardia has subsided, and blood pressure is now normal. This product truly makes a difference.

Updated: Mar 2026

Heart Attack details

Coenzyme Q10 aids heart recovery

Based on 16 Researches

Singh RB, Fedacko J, Mojto V, Pella D. Coenzyme Q10 Modulates Remodeling Possibly by Decreasing Angiotensin-Converting Enzyme in Patients with Acute Coronary Syndrome. Antioxidants (Basel). 2018;7. doi:10.3390/antiox7080099

We investigated how coenzyme Q10 might help with heart function after a heart attack, particularly focusing on its role in heart remodeling. In a well-structured study involving 55 patients with left ventricular dysfunction following an acute myocardial infarction, we compared the effects of coenzyme Q10 to a placebo over a 24-week period.

Through careful measurements using echocardiography, we observed notable improvements in the walls of the heart and overall heart mass for those taking coenzyme Q10. Specifically, the thickness of the heart walls decreased, and the left ventricular mass was reduced more significantly than in those receiving the placebo.

Additionally, coenzyme Q10 appeared to maintain heart shape and prevent worsening of heart function compared to the placebo group. Our results also highlighted a significant drop in angiotensin-converting enzyme (ACE) levels in the coenzyme Q10 group, suggesting beneficial effects on heart remodeling and function during recovery from a heart attack.

7.5

Stronger heart

Most Useful Review

4 people found this helpful

My dog and I both suffer from mitral heart valve prolapse. Since taking this product, I’ve noticed an increase in heart strength and am very pleased with it. I will continue using it as it seems to be well absorbed.

Updated: Mar 2026

Heart Disease details

CoQ-10 improves heart failure outcomes

Based on 16 Researches

We explored the effectiveness of coenzyme Q10, commonly known as CoQ-10, in treating heart failure (HF) by reviewing multiple studies. Our systematic analysis included research from respected databases like MEDLINE and the Cochrane Library, where we focused on three main outcomes: heart failure-related mortality, exercise capacity, and left ventricular ejection fraction (LVEF).

From the 16 studies we examined, we observed that CoQ-10 treatment significantly decreased HF-related mortality by an impressive 40%. Additionally, we noted improvements in exercise capacity among patients, indicating that CoQ-10 could help individuals with heart failure engage in more physical activity and improve their quality of life.

However, when it came to LVEF—the measurement of how well the heart pumps blood—CoQ-10 did not show significant changes. Despite this, we believe that its potential impact on LVEF should be investigated further, as the data does suggest there may be benefits that warrant additional research.

In summary, while CoQ-10 proved to be beneficial in enhancing exercise capacity and reducing mortality associated with heart failure, the exact effects on LVEF remain unclear and would benefit from more focused studies in the future.

Improves post-COVID health

Most Useful Review

132 people found this helpful

As a post-COVID patient, I struggled with many side effects, impacting my daily routine. Since starting CoQ10, I've noticed significant health improvements, including my heart health and endurance. This supplement helps protect against oxidative damage post-virus.

Updated: Mar 2026

High Cholesterol details

CoQ10 lowers cholesterol levels

Based on 12 Researches

Liu Z, Tian Z, Zhao D, Liang Y, Dai S, et al. Effects of Coenzyme Q10 Supplementation on Lipid Profiles in Adults: A Meta-analysis of Randomized Controlled Trials. J Clin Endocrinol Metab. 2022;108:232. doi:10.1210/clinem/dgac585

We delved into the effects of coenzyme Q10 (CoQ10) supplementation on cholesterol levels in adults to determine how it can influence lipid profiles. Through a thorough meta-analysis of fifty randomized controlled trials involving nearly 2800 participants, we explored its potential benefits for reducing cholesterol levels effectively.

Our findings indicated that CoQ10 supplementation significantly lowered levels of total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG), while simultaneously increasing high-density lipoprotein cholesterol (HDL-C). This effect was particularly pronounced at a dosage of 400 to 500 mg per day, which was shown to produce the best results in terms of reducing TC.

Overall, the study provided strong evidence that CoQ10 could be a valuable ally in managing high cholesterol, helping to achieve a healthier lipid profile in adults. This research sheds light on a promising dietary supplement that might assist individuals seeking to improve their cholesterol levels effectively.

Energy production boost

Most Useful Review

31 people found this helpful

BEST FRIENDS! Coenzyme Q-10 helps produce energy in the body and acts as an antioxidant. CoQ10 controls high blood pressure and maintains energy metabolism, aiding in heart health and even supporting the immune system. It is absorbed better with fats!

Updated: Mar 2026

Migraine details

CoQ10 improves migraine symptoms

Based on 29 Researches

Dahri M, Tarighat-Esfanjani A, Asghari-Jafarabadi M, Hashemilar M. Oral coenzyme Q10 supplementation in patients with migraine: Effects on clinical features and inflammatory markers. Nutr Neurosci. 2019;22:607. doi:10.1080/1028415X.2017.1421039

We conducted a study to see how coenzyme Q10 (CoQ10) supplementation impacts migraine symptoms and inflammation. This randomized double-blind trial involved 45 non-menopausal women with episodic migraines.

Participants took either 400 mg/day of CoQ10 or a placebo for three months, while continuing their usual migraine medications. We observed a significant reduction in migraine frequency, severity, and duration in the CoQ10 group.

Additionally, CoQ10 levels and inflammatory markers showed some changes, specifically a reduction in certain proteins linked to inflammation. However, not all markers responded positively, indicating some limited effectiveness.

Migraine attacks nearly absent

Most Useful Review

16 people found this helpful

This product is effective; after regular use, my migraine attacks have almost disappeared. I feel energised and overall it has greatly improved my wellbeing.

Updated: Mar 2026

Rash details

The composition is clean, and the capsules are conveniently sized and easy to swallow. I have been taking them for only two weeks to address insulin resistance. I feel more energetic, snack less, and have fewer cravings for sweets. The rashes on my face have decreased, and I calm down more quickly after stress. The results are evident, and I hope to enhance my metabolism through this supplement. Thank you for the fast delivery and excellent quality.

Adenoiditis details

Strong immunity boost

For three months, I've been taking a 24/7 immunity support product, and astonishingly, my throat has not hurt at all! It's important to care for your body.

Riboflavin may improve symptoms

Diarrhea details

Yoon HR, Hahn SH, Ahn YM, Jang SH, Shin YJ, et al. Therapeutic trial in the first three Asian cases of ethylmalonic encephalopathy: response to riboflavin. J Inherit Metab Dis. 2001;24:870.

We observed three Korean girls suffering from ethylmalonic encephalopathy, marking the first known cases in Asia. Through treatment with riboflavin and coenzyme Q10, we noted slight improvements in their motor functions, cognitive behaviors, and notably, their chronic mucoid diarrhea.

Although the improvements were modest, the connection between these treatments and their impact on diarrhea is intriguing. It's worth mentioning that since both riboflavin and coenzyme Q10 were used in the study, we cannot definitively isolate the effects of coenzyme Q10 on diarrhea alone.

The precise cause of ethylmalonic encephalopathy is still unclear, but our findings suggest that riboflavin may offer some benefit. Overall, while we didn't see a significant breakthrough regarding diarrhea, the potential of these treatments warrants further exploration to understand their full effects.

Resulted in diarrhoea

Most Useful Review

5 people found this helpful

I expected positive results from Omega 3, but I developed constipation from bioprina and diarrhoea, which is troubling.

Updated: Mar 2026

Reflux details

CoQ10 may improve heart failure symptoms

Likely Very Effective

Baggio E, Gandini R, Plancher AC, Passeri M, Carmosino G. Italian multicenter study on the safety and efficacy of coenzyme Q10 as adjunctive therapy in heart failure. CoQ10 Drug Surveillance Investigators. Mol Aspects Med. 1994;15 Suppl:s287.

We investigated the role of coenzyme Q10 (CoQ10) as a supplementary treatment for patients suffering from congestive heart failure, particularly focusing on its impact on reflux symptoms. In this study, we enrolled 2,664 patients across 173 centers in Italy, all of whom were already on standard heart failure treatments. Over three months, participants took daily doses of CoQ10 ranging from 50 to 150 mg, with most having 100 mg.

At the end of the three-month period, we recorded various clinical symptoms. Notably, among patients experiencing reflux, 71.81% reported some level of improvement. This suggests that CoQ10 could offer additional benefits when it comes to managing reflux as a symptom of heart failure.

While we observed favorable trends, we also noted that the improvements could not be solely attributed to CoQ10, given that patients continued their standard treatments. The low rate of side effects, with only 1.5% experiencing adverse reactions, adds to the treatment's appeal. Overall, this study indicates that CoQ10 might enhance quality of life for heart failure patients, including those with reflux symptoms.

Terrible nausea

Most Useful Review

I experienced terrible nausea with this product, making it hard to assess its effectiveness. As someone with occasional reflux and heartburn, I suspect the BioPerine is to blame, so those with a sensitive stomach might prefer CoQ10 without it.

Updated: Mar 2026

Headache details

CoQ10 reduces migraine frequency and duration

Based on 22 Researches

Sazali S, Badrin S, Norhayati MN, Idris NS. Coenzyme Q10 supplementation for prophylaxis in adult patients with migraine-a meta-analysis. BMJ Open. 2021;11:e039358. doi:10.1136/bmjopen-2020-039358

We systematically reviewed randomized controlled trials comparing coenzyme Q10 with placebo for migraine prevention in adults. Our meta-analysis examined study data from major medical databases through December 2019, assessing how CoQ10 affects migraine severity, attack frequency, and headache duration.

The evidence suggests CoQ10 has beneficial effects in reducing both how often migraines occur and how long they last. These findings indicate CoQ10 may be a useful preventive option for migraine sufferers, though further research could help clarify optimal dosing and its effects when combined with other supplements.

Eliminated headaches

Most Useful Review

15 people found this helpful

I’ve been taking CoQ10 for several years and it has completely resolved my constant headaches. I recommended it to my wife and two others, all of whom have also experienced relief. This product truly works!

Updated: Apr 2026

Nausea details