SOLARAY Quercetin Bromelain & Vitamin C
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Supplement Facts
Serving Size: 2 VegCaps
Amount Per Serving
%DV
Vitamin C (as Ascorbic Acid)
1,235 mg
1,372%
Quercetin 
465 mg
*
Bromelain (Supplying 90 MCU)
50 mg
*

The product is found useful for the following medical conditions

Allergies details

SCIENTIFIC SCORE
Moderately Effective
Based on 20 Researches
8.4
USERS' SCORE
Excellent
Based on 41 Reviews
9.1
9
Quercetin may alleviate allergy symptoms
Effects of repeated oral intake of a quercetin-containing supplement on allergic reaction: a randomized, placebo-controlled, double-blind parallel-group study.
Most Relevant Research
We conducted a study involving 66 Japanese adults suffering from allergy symptoms, focusing on the potential of a quercetin-containing supplement. Participants took either the supplement or a placebo daily for four weeks.

Notable results showed that those taking quercetin experienced significant improvements in allergy-related symptoms such as eye itching, sneezing, and nasal discharge. Additionally, their overall quality of life received a boost.

While there were minor side effects, the findings suggest that quercetin might be an effective option for managing certain allergy symptoms.
9.5
Highly effective
Most Useful Review
This is an effective blend of quercetin, bromelain, and vitamin C. I follow my physician’s instructions to relieve symptoms caused by seasonal allergies. The results are significant; I prefer this over antihistamines during this season.

Cough details

SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 9 Reviews
8.8
9.5
Improves lung function
Most Useful Review
The ingredients and proportions are excellent. After some time, I feel my lungs are better than before; I no longer cough, and my immunity has also improved.

Chronic Cough details

SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 7 Reviews
8.7
8
Quercetin's effect on chronic cough
Chronic cough relief by allosteric modulation of P2X3 without taste disturbance.
Most Relevant Research
We examined how quercetin, a natural compound, can help alleviate chronic cough by targeting P2X3 receptors, which are involved in cough reflexes. The study involved testing its effects on male mice and guinea pigs.

Results showed that quercetin effectively modulated these receptors without causing adverse taste effects, unlike other drugs like gefapixant. This potential opens up new avenues for treating chronic cough without unpleasant side effects.
9.5
Chronic cough relief
Most Useful Review
An excellent complex for allergies and viral diseases. It helped to remove my chronic cough. Additionally, we give it to children at the onset of colds, and it helps them recover faster.

Cold details

SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8.2
USERS' SCORE
Good
Based on 48 Reviews
8.7
8
Quercetin boosts grape cold resistance
VvbZIP22 regulates quercetin synthesis to enhances cold resistance in grape.
Most Relevant Research
We observed that quercetin, a powerful antioxidant, plays a significant role in helping grapes withstand cold temperatures. In our study, we found that grapes exposed to low temperatures accumulate more quercetin, which in turn enhances their cold resistance.

By applying exogenous quercetin, we noted a marked improvement in the grapes' ability to endure low-temperature stress. Our research revealed that a key gene, VvFLS1, responsible for quercetin synthesis is upregulated when grapes experience cold conditions.

We also discovered that VvbZIP22, a protein that binds to the VvFLS1 promoter, is crucial for mediating this process. When we overexpressed VvbZIP22 in grapes, it resulted in higher levels of quercetin and improved cold resistance, further confirming its pivotal role in the plant's adaptation to harsh environments.

Through these findings, we highlighted the importance of quercetin in enhancing grape survival during cold spells, showcasing a vital link between plant biology and climate resilience.
9.5
Prevent colds
Most Useful Review
It is an excellent ingredient for preventing colds during seasonal changes. I give it to my children every two days when they return to school. Thanks to this, I remain healthy and do not catch a cold. I also believe it helps alleviate rhinitis.

Common Cold details

SCIENTIFIC SCORE
Possibly Effective
Based on 14 Researches
7.5
USERS' SCORE
Good
Based on 10 Reviews
8.7
9
Quercetin reduces rhinovirus effects
Quercetin inhibits rhinovirus replication in vitro and in vivo.
Most Relevant Research
We investigated whether quercetin, a natural plant compound, could help combat common cold caused by rhinovirus (RV). In our study, quercetin reduced RV replication and inflammation in airway cells both in laboratory settings and in mice. When given before or after infection, quercetin limited the virus's ability to replicate and decreased harmful immune responses.

While our findings are promising, indicating that quercetin acts at various points in the virus's lifecycle, we recognize the need for further research to solidify its effectiveness in treating or preventing common colds.
9.5
Irreplaceable during cold
Most Useful Review
This complex, featuring Vitamin C and Quercetin, is fantastic during a cold! It really helps me bounce back quickly.

Pelvic Pain details

SCIENTIFIC SCORE
Possibly Effective
Based on 15 Researches
7.8
USERS' SCORE
Good
Based on 4 Reviews
8.7
9
Quercetin shows promise for IC
Treatment of interstitial cystitis with a quercetin supplement.
Most Relevant Research
We recently tested a quercetin-based supplement, Cysta-Q, on 22 patients with interstitial cystitis (IC) in an open-label trial. Over 4 weeks, participants took two capsules daily, and we assessed their symptoms before and after treatment.

The results were encouraging; all patients reported improvements in their problem and symptom indices, as well as pain levels. Interestingly, everyone but one individual experienced some positive change, and there were no side effects reported.

These promising findings suggest that quercetin could be beneficial for those suffering from IC, although larger, controlled studies are needed for confirmation.
9.5
Pelvic pain relief
Most Useful Review
Sinus forehead pain has disappeared within a week. Last October, I experienced consistent forehead sinus pain, particularly when lowering my head. I began taking this supplement twice daily, with one capsule each time. After just one week, my pain has vanished.

Sleep Apnea details

SCIENTIFIC SCORE
Possibly Effective
Based on 11 Researches
7.5
USERS' SCORE
Good
Based on 5 Reviews
8.7
9
Vitamin C improves sleep apnea endothelial function
Antioxidant vitamin C improves endothelial function in obstructive sleep apnea.
Most Relevant Research
We evaluated how vitamin C might improve endothelial function in patients with obstructive sleep apnea (OSA). In our study, we compared 10 individuals with untreated OSA to 10 matched control subjects without sleep issues. We measured how well blood vessels reacted to increased blood flow, known as flow-mediated dilation (FMD), using ultrasound before and after administering vitamin C.

Our findings revealed a significant difference: baseline FMD was lower in OSA patients compared to the control group. However, after an intravenous injection of vitamin C, the FMD in OSA patients improved dramatically, reaching levels similar to those seen in the healthy controls. Interestingly, vasoreactivity in the control subjects remained unchanged.

These results suggest that oxidative stress might be a key factor contributing to the endothelial dysfunction experienced by individuals with OSA. The positive response to vitamin C opens up exciting possibilities for exploring antioxidant treatments in managing cardiovascular issues related to OSA.
9.5
Improved sleep quality
Most Useful Review
Stopped the post-nasal drip and can now enjoy a good night's sleep.

Swollen Lymph Nodes details

SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 5 Reviews
8.7
9.5
Reduces inflammation
Most Useful Review
I highly recommend this for allergy sufferers! Quercetin is renowned for its antihistamine and anti-inflammatory properties, helping alleviate various allergies, asthma attacks, and skin issues. This product is boosted with Bromelain and Vitamin C, assisting digestion and reducing inflammation and swelling. I take it in cycles: two months on, three months off. I really appreciate this supplement, taking two capsules twice daily, ideally between meals. Wishing you all health and longevity!

Athlete’s Foot details

SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 2 Reviews
8.6
9.5
Restores health
Most Useful Review
Excellent product! The composition and price are very good, and the medication works well during and after an illness. It effectively helps you get back on your feet.

Eczema details

SCIENTIFIC SCORE
Possibly Effective
Based on 4 Researches
7.5
USERS' SCORE
Good
Based on 5 Reviews
8.6
8
Quercetin shows promise for eczema
Antioxidant Activity of Quercetin-Containing Liposomes-in-Gel and Its Effect on Prevention and Treatment of Cutaneous Eczema.
Most Relevant Research
We investigated the potential of quercetin, a natural compound known for its antioxidant properties, in treating cutaneous eczema. Specifically, we prepared a special formulation of quercetin contained within liposomes and mixed it into a gel. This method aimed to enhance the compound's effectiveness in promoting skin healing.

Our findings revealed that this quercetin-infused gel not only demonstrated significant antioxidant activity but also improved skin conditions in mice suffering from eczema. The application of this formulation led to noteworthy reductions in various symptoms associated with the skin condition, such as inflammation and epidermal peeling.

In comparison to a commonly used eczema treatment, we found that the quercetin formulation outperformed the commercially available steroid cream in reducing malondialdehyde levels, a marker of oxidative stress in the body. These results suggest that quercetin-containing liposomes hold promise as a novel approach for preventing and treating cutaneous eczema.
9.5
Sun protection benefits
Most Useful Review
To manage my eczema has been great! My husband and I have been using these for years, and I’ve been using them for nearly a decade. They help provide vitamin C, allowing me to enjoy the sun without suffering from heat and rosacea on my skin in Singapore.

Flu details

SCIENTIFIC SCORE
Possibly Effective
Based on 5 Researches
7.2
USERS' SCORE
Good
Based on 6 Reviews
8.6
8
Vitamin C mitigates flu pneumonia
A new mechanism of vitamin C effects on A/FM/1/47(H1N1) virus-induced pneumonia in restraint-stressed mice.
Most Relevant Research
We examined the effects of vitamin C on pneumonia caused by the influenza virus, specifically the H1N1 strain, in mice under stress. The study found that when exposed to restraint stress, the mice experienced increased mortality and more severe pneumonia symptoms.

However, by giving them oral vitamin C at doses of 125 and 250 mg/kg, we observed a significant reduction in these severe outcomes. Vitamin C seemed to modulate the expression of certain genes related to the immune response, such as MAVS and IRF3, and increased the expression of NF-κB, which plays a key role in the body's antiviral defense.

Our research suggested that vitamin C's protective effects might stem from its ability to inhibit excess cortisol production in the adrenal gland, which is often elevated due to stress. By lowering cortisol levels, vitamin C may help reduce susceptibility to influenza infections, making it a potential ally during the flu season, especially for those experiencing stress.

Through these findings, we highlighted a new mechanism for how vitamin C can be beneficial during influenza infections, particularly for those who are feeling overwhelmed.
9.5
No flu experiences
Most Useful Review
Never had a cold or flu. My doctor recommended these years ago. I have allergies to trees, grass, and ragweed. I stopped my injections and started taking these supplements. I've been using them for over 35 years, and I've never experienced a cold or flu. As a senior citizen, I find them invaluable.

Arthritis details

SCIENTIFIC SCORE
Possibly Effective
Based on 29 Researches
7.9
USERS' SCORE
Good
Based on 2 Reviews
8.5
9
Quercetin nanoparticles reduce senescence
Nanoparticle-delivered quercetin exhibits enhanced efficacy in eliminating iron-overloaded senescent chondrocytes.
Most Relevant Research
We explored the effects of quercetin, a natural compound with potential benefits for treating osteoarthritis (OA), specifically focusing on its ability to target damaged chondrocytes, the cartilage cells that play a crucial role in joint health. In our study, we utilized specialized nanoparticles to increase the effectiveness of quercetin, overcoming its usual limitations related to absorption and bioavailability.

Our research involved subjecting human chondrocytes to conditions that mimic OA. Afterward, we treated them with either free quercetin or our quercetin-loaded nanoparticles (Q-NP). We found that the Q-NP not only allowed for better cellular absorption but also selectively induced apoptosis, or programmed cell death, in senescent chondrocytes. This is significant because eliminating these unhealthy cells could pave the way for healthier joint repair and function.

In addition to promoting cell death in the right cells, Q-NP led to an increase in oxidative stress and reduced key markers of cellular aging. We also noted that the treatment halted the cell cycle in cells that needed to be eliminated. Overall, our findings suggest that enhancing quercetin delivery through nanoparticles holds great promise for improving osteoarthritis outcomes by actively removing harmful senescent cells from joint tissues.
8.8
Reduces inflammation
Most Useful Review
By correcting fatty acid metabolism, Quercetin reduces the formation of leukotrienes, which are significantly more inflammatory than histamine. This antioxidant is beneficial in treating arthritis, rheumatism, systemic lupus erythematosus, and ulcerative colitis by neutralising histamine. Additionally, it prevents ulcers and haemorrhages in the digestive tract and supports the nervous, immune, and endocrine systems. Overall, it is incredibly beneficial!

Autoimmune Disorder details

SCIENTIFIC SCORE
Moderately Effective
Based on 27 Researches
8.1
USERS' SCORE
Good
Based on 2 Reviews
8.5
9
Quercetin shows promise for lupus
Quercetin ameliorates lupus symptoms by promoting the apoptosis of senescent Tfh cells via the Bcl-2 pathway.
Most Relevant Research
We explored how quercetin, a natural compound, may help alleviate symptoms of systemic lupus erythematosus (SLE), an autoimmune disorder. Our study observed that quercetin reduced kidney damage and swelling in the lymph nodes of lupus-affected mice. It appeared to lower the number of certain T cells that drive the disease and promoted cell death in aged immune cells. By influencing key pathways, quercetin showed potential as a therapy for SLE, offering hope in tackling this complex condition.
9.5
Skin improvement confirmed
Most Useful Review
I ordered this complex to assist my body with allergic reactions. I took 2 capsules between meals, and after a month, I noticed a significant reduction in skin allergy symptoms. I highly recommend it!

Cold Sores details

SCIENTIFIC SCORE
Moderately Effective
Based on 4 Researches
8.6
USERS' SCORE
Good
Based on 3 Reviews
8.5
9
Vitamin C alleviates cold sores
Topical treatment of recurrent mucocutaneous herpes with ascorbic acid-containing solution.
Most Relevant Research
We investigated how an ascorbic acid-based solution could help treat recurrent cold sores, also known as mucocutaneous herpes. This study was carefully designed as a randomized, double-blind, placebo-controlled trial, which helps ensure the results are reliable and trustworthy.

Participants used a strong solution of Ascoxal, rich in vitamin C, applied to their cold sores multiple times on the first day of the outbreak. We monitored various symptoms daily, including the severity of scabs, redness, and blisters, comparing the experiences of those using the vitamin C solution to a placebo group.

Our findings were promising: the active treatment resulted in fewer days with scabbing and less severe symptoms overall. Moreover, those using the vitamin C solution showed reduced persistence of scabs compared to the placebo group, along with a lower frequency of detected herpes virus after treatment.

In conclusion, this brief course of vitamin C treatment appears to have significant clinical benefits against cold sores, opening the door for future research on more extensive and frequent treatment regimes.
9.5
Highly recommended supplement
Most Useful Review
Perfectly! I recommend quercetin to everyone, particularly for combating viruses and colds. It also contains vitamin C, and the pricing is reasonable.

Lung Cancer details

SCIENTIFIC SCORE
Possibly Effective
Based on 8 Researches
7.9
USERS' SCORE
Good
Based on 3 Reviews
8.5
9
Vitamin C reduces lung cancer spread
Vitamin C Inhibited Pulmonary Metastasis through Activating Nrf2/HO-1 Pathway.
Most Relevant Research
We explored the effects of vitamin C on lung cancer, particularly its ability to inhibit pulmonary metastasis—meaning the spread of cancer to the lungs. Using an H22 pulmonary metastasis mouse model, we observed that vitamin C administration, both intraperitoneally and orally, showed promising results.

Through the research, we found that intraperitoneal injections of vitamin C led to an increase in crucial proteins like Nrf2 and HO-1, which are known to help combat cancer. This process resulted in increased cell death in cancer cells through DNA damage and apoptosis, mimicking the effects seen when using pro-oxidant treatments in cells lacking the p53 protein—a critical tumor suppressor.

Furthermore, oral vitamin C not only activated these protective pathways but also spurred the expression of p53 in healthy tumor cells, showcasing its potential as an antimetastatic agent. We noted that vitamin C reduced the proliferation and migration of lung cancer cells while being gentler on normal cells, suggesting a safer therapeutic profile.

Overall, this study highlights vitamin C's dual role in both bolstering the body's defenses against cancer and directly inhibiting the spread of lung cancer, paving the way for its consideration in clinical treatments for pulmonary metastasis.
8.8
Significant lung improvement
Most Useful Review
The triple combination formula maximises the effect. It has a significant impact on lung discomfort.

Sinusitis details

SCIENTIFIC SCORE
Moderately Effective
Based on 5 Researches
8
USERS' SCORE
Good
Based on 2 Reviews
8.4
9
Quercetin reduces sinus inflammation
Quercetin attenuates naso-sinusal inflammation and inflammatory response in lungs and brain on an experimental model of acute rhinosinusitis in rats.
Most Relevant Research
This study explored how quercetin may help reduce inflammation associated with sinusitis using a rat model. We observed that introducing lipopolysaccharides (LPS) caused significant inflammation in nasal and sinus areas, as well as in the lungs and brain.

When we administered quercetin after the LPS treatment, it notably decreased inflammatory markers like TNF-α and IL-6. The results indicated reduced inflammation in nasal and lung tissues, showcasing quercetin's potential benefits. However, while there were encouraging findings, its effects on brain inflammation were more limited.
7.8
Supports sinus health
Most Useful Review
An excellent nutritional supplement containing quercetin, bromelain, and vitamin C for sinus health. I take it in courses for two months and then break for three. I really appreciate this product. It has a convenient dosage of two capsules twice a day, taken between meals. I recommend it to anyone suffering from sinusitis.

Headache details

SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 2 Reviews
8.1
8
Vitamin C intake reduces migraines
Association between dietary vitamin C intake and migraine in adults: A cross-sectional study of the National Health and Nutrition Examination Survey.
Most Relevant Research
We aimed to understand how dietary vitamin C affects migraines by analyzing data from the National Health and Nutrition Examination Survey, conducted from 1999 to 2004. In this survey, we identified adults who reported experiencing severe headaches or migraines over the past three months.

Our findings were quite revealing. Out of 4,101 participants, 702 individuals reported having a migraine, which represents about 17% of the group. We discovered an interesting trend: higher dietary vitamin C intake seemed to correlate with a lower likelihood of experiencing migraines. Specifically, participants with the highest vitamin C intake had a 36% reduced odds of suffering from migraines compared to those with the lowest intake.

We employed various statistical methods to confirm our results, including logistic regression and restricted cubic spline regression, which showed a clear linear relationship between vitamin C intake and the frequency of migraines.

Overall, this study suggests that increasing our dietary vitamin C might help minimize migraines, which is promising news for those who suffer from these intense headaches. However, as with all studies, further research is necessary to solidify these findings and fully understand the relationship between vitamin C and headache relief.
9.5
Headaches ceased
Most Useful Review
Good composition, fast delivery, high-quality packaging. I appreciate the excellent dosage and natural plant ingredients. The capsules are slightly larger but easy to swallow and have a pleasant citrus taste. I take one capsule daily with my vitamin D3, K2, magnesium, and B6. After 10 days, I’ve noticed significant benefits; previous issues with frequent headaches, nausea, and fatigue have vanished. I feel more energetic and my mood has improved. I highly recommend it, especially for fitness enthusiasts or those on diets.
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