Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 14 Researches
8.3
USERS' SCORE
Moderately Good
Based on 52 Reviews
7.8
Supplement Facts
Serving Size: 2 Veg Capsules
Amount Per Serving
%DV
Quercetin
800 mg
**
Bromelain (2,400 GDU/g)
165 mg
**
Top Medical Research Studies
8
We explored the effects of quercetin on cardiac fibrosis, a major concern in cardiovascular diseases. Using an experiment on mice, we administered quercetin after inducing cardiac stress and assessed its impact on heart function and fibrosis. Our findings showed that quercetin significantly reduced cardiac fibrosis and helped reverse cell proliferation caused by stress hormones. This protective effect was linked to its regulation of the SIRT3 signaling pathway. Overall, quercetin presents a promising avenue for addressing heart fibrosis.
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8
We examined the effects of quercetin on heart damage following a heart attack in rats. In our study, quercetin was administered just before reperfusion after a blockage in the heart's blood supply.
The results showed that quercetin significantly improved heart function and reduced harmful neutrophil formations. By lowering these formations, we believe quercetin may offer new hope as a protective treatment against heart injuries caused by reperfusion and inflammation.
The results showed that quercetin significantly improved heart function and reduced harmful neutrophil formations. By lowering these formations, we believe quercetin may offer new hope as a protective treatment against heart injuries caused by reperfusion and inflammation.
Read More
9.5
Quercetin improves post-MI recovery
We investigated the potential of quercetin, a natural compound found in fruits and vegetables, to prevent challenges after a heart attack (myocardial infarction, or MI). By treating mice with quercetin before inducing MI, we observed significant improvements in heart function, survival rates, and reduced heart damage caused by inflammation and fibrosis.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
Read More
Most Useful Reviews
9
Cardiovascular support
9 people found this helpful
I ordered this long ago but only recently tried it. My endocrinologist suggested bromelain for better food absorption and anti-inflammatory activity. Quercetin strengthens blood vessels and supports the cardiovascular system. I take one to two capsules twice daily with food, and the jar lasts long enough for a complete course.
Read More
9
Preventing disease
3 people found this helpful
This is an excellent supplement for heart health. We use it for both my mother and grandmother, especially after Covid-19, as it's crucial for vascular recovery. Quercetin is a powerful antioxidant, protecting cell membranes and helping prevent cardiovascular disease.
Read More
9
Immunity booster
3 people found this helpful
Quercetin is a powerful immunomodulator and antioxidant I always buy to strengthen my immune system. During the pandemic, it’s especially vital as it defends against infections. Quercetin has numerous benefits, including heart support and accelerated healing. I recommend keeping it in your home for overall health.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 14 Researches
8.3
- All Researches
9.5
Quercetin improves post-MI recovery
We investigated the potential of quercetin, a natural compound found in fruits and vegetables, to prevent challenges after a heart attack (myocardial infarction, or MI). By treating mice with quercetin before inducing MI, we observed significant improvements in heart function, survival rates, and reduced heart damage caused by inflammation and fibrosis.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
Read More
9
We examined the impact of Danggui Buxue Decoction (DBD), a traditional Chinese remedy, on atherosclerotic plaques in a mice model. Using a blend of advanced bioinformatics and experimental validation, we discovered that DBD can effectively stabilize these plaques.
Key ingredients like quercetin played a significant role in this process by targeting several important proteins that influence inflammation and lipid metabolism. Our findings suggest that quercetin and another compound, kaempferol, work together to improve heart health by reducing atherosclerotic vulnerability.
Key ingredients like quercetin played a significant role in this process by targeting several important proteins that influence inflammation and lipid metabolism. Our findings suggest that quercetin and another compound, kaempferol, work together to improve heart health by reducing atherosclerotic vulnerability.
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9
We examined how quercetin might protect against heart issues associated with menopause, particularly by looking at its effects on cardiac reperfusion arrhythmias in ovariectomized rats. Over a four-week period, we found that quercetin significantly reduced heart damage and improved mitochondrial function by enhancing ATP production. This suggests quercetin may help manage some heart health risks tied to decreased estrogen levels. While our findings are promising, further research in humans is needed to confirm these effects.
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9
We investigated the effects of quercetin (QUE), a natural dietary phytochemical, on platelet toxicity induced by extracellular histones, which can harm our body during critical illnesses.
In our study, we set up experiments to observe how histones trigger platelet activation and the protective influence of QUE. Our findings revealed that QUE successfully reduced platelet activation and protected against stress-induced damage.
This suggests that quercetin could be a promising candidate for addressing platelet-related issues associated with histones.
In our study, we set up experiments to observe how histones trigger platelet activation and the protective influence of QUE. Our findings revealed that QUE successfully reduced platelet activation and protected against stress-induced damage.
This suggests that quercetin could be a promising candidate for addressing platelet-related issues associated with histones.
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9
We developed an innovative biosensing platform to explore how quercetin affects heart cells, especially during cardiac oxidative stress. By testing cardiomyocytes, we found that quercetin can protect against injury caused by oxidative stress, highlighting its potential as a therapeutic option.
However, we also determined a safe concentration limit and noted potential long-term effects on heart cells. This balanced evaluation not only sheds light on quercetin's advantages but also emphasizes the need for careful consideration in its use for cardiovascular health.
However, we also determined a safe concentration limit and noted potential long-term effects on heart cells. This balanced evaluation not only sheds light on quercetin's advantages but also emphasizes the need for careful consideration in its use for cardiovascular health.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 52 Reviews
7.8
- All Reviews
- Positive Reviews
- Negative Reviews
9
Cardiovascular support
9 people found this helpful
I ordered this long ago but only recently tried it. My endocrinologist suggested bromelain for better food absorption and anti-inflammatory activity. Quercetin strengthens blood vessels and supports the cardiovascular system. I take one to two capsules twice daily with food, and the jar lasts long enough for a complete course.
Read More
9
Preventing disease
3 people found this helpful
This is an excellent supplement for heart health. We use it for both my mother and grandmother, especially after Covid-19, as it's crucial for vascular recovery. Quercetin is a powerful antioxidant, protecting cell membranes and helping prevent cardiovascular disease.
Read More
9
Immunity booster
3 people found this helpful
Quercetin is a powerful immunomodulator and antioxidant I always buy to strengthen my immune system. During the pandemic, it’s especially vital as it defends against infections. Quercetin has numerous benefits, including heart support and accelerated healing. I recommend keeping it in your home for overall health.
Read More
9
Fights allergies
2 people found this helpful
Quercetin is a potent antioxidant and anti-inflammatory agent. It strengthens capillary walls, prevents the production of histamine, and helps treat respiratory diseases like asthma while combating cardiovascular disease and viral infections. It is also beneficial for preventing cognitive decline and skin aging.
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7.5
Immune system boost
526 people found this helpful
Excellent tool! I found Quercetin with Bromelain effective for strengthening my immune system and alleviating allergy symptoms. After taking one capsule daily, I noticed a reduction in my allergies and anti-inflammatory effects by the first week. I'm optimistic about its potential to slow down the ageing process. Thank you for this product!
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Frequently Asked Questions
7.5
Immune system boost
526 people found this helpful
Excellent tool! I found Quercetin with Bromelain effective for strengthening my immune system and alleviating allergy symptoms. After taking one capsule daily, I noticed a reduction in my allergies and anti-inflammatory effects by the first week. I'm optimistic about its potential to slow down the ageing process. Thank you for this product!
9
Cholesterol reduction
33 people found this helpful
As I manage hyperlipidemia and Hashimoto's disease, I started taking Quercetin to reduce inflammation. I’m thrilled to say that my cholesterol has decreased significantly! Quercetin is improving my blood flow and aiding in cardiovascular disease prevention.
7.5
Anti-inflammatory agent
3 people found this helpful
Quercetin and bromelain enhance the immune system and effectively combat viral infections and inflammatory conditions, which can also affect cardiovascular disease. I find this supplement invaluable for my health.
7.5
Allergy symptom relief
142 people found this helpful
I took Quercetin for allergies and as an antioxidant. The capsules are pleasant and easy to swallow. After a week, I experienced relief from allergy symptoms and improved digestion, including reduced constipation. Quercetin strengthens blood vessels and helps mitigate cardiovascular disease risks.
7.5
Effective antihistamine
7 people found this helpful
Having suffered from allergies since childhood, I chose quercetin as a natural remedy. After 16 years, it effectively reduces allergic reactions and inflammation, supporting cardiovascular health by strengthening blood vessels. I take it daily with food, especially during allergy season.
9
Preventing disease
3 people found this helpful
This is an excellent supplement for heart health. We use it for both my mother and grandmother, especially after Covid-19, as it's crucial for vascular recovery. Quercetin is a powerful antioxidant, protecting cell membranes and helping prevent cardiovascular disease.
9
Fights allergies
2 people found this helpful
Quercetin is a potent antioxidant and anti-inflammatory agent. It strengthens capillary walls, prevents the production of histamine, and helps treat respiratory diseases like asthma while combating cardiovascular disease and viral infections. It is also beneficial for preventing cognitive decline and skin aging.
7.5
Immunity boost
3 people found this helpful
Quercetin is a potent antioxidant that protects cell membranes and strengthens small blood vessels, aiding in the prevention of cardiovascular disease. It enhances immune function and is effective for various inflammatory diseases, offering excellent overall health benefits.
7.5
Blood cleansing
72 people found this helpful
Quercetin and Bromelain work effectively together to cleanse the blood and reduce inflammation. Quercetin boosts blood vessel tone and prevents clots, which is crucial for preventing cardiovascular disease. It is recommended to take Quercetin in courses due to potential kidney stress.
9
Respiratory health
63 people found this helpful
I highly recommend Quercetin, as it combats respiratory infections and supports cardiovascular health. Bromelain enhances Quercetin absorption, improving intestinal health and nutrient uptake.
9
Strong antioxidant
1 people found this helpful
I highly recommend Quercetin for heart health, especially after COVID to support vascular repair. It acts as a potent antioxidant, protects cell membranes from free radicals, and is effective against cardiovascular diseases.
9
Natural anti-inflammatory
1 people found this helpful
Most people don't know that quercetin is a natural anti-inflammatory, akin to ibuprofen. It's effective in alleviating many conditions tied to cardiovascular disease, allergies, and even mental health issues. Combining it with Vitamin C enhances its benefits.
7.5
Effective antioxidant
1 people found this helpful
Quercetin with bromelain is an excellent natural remedy that acts as a powerful antioxidant and immunomodulator. It supports immune health, digestion, and reduces inflammation. I have seen significant positive results, and it’s safe with no side effects.
9
Cardiovascular support
9 people found this helpful
I ordered this long ago but only recently tried it. My endocrinologist suggested bromelain for better food absorption and anti-inflammatory activity. Quercetin strengthens blood vessels and supports the cardiovascular system. I take one to two capsules twice daily with food, and the jar lasts long enough for a complete course.
7.5
Heart health support
9 people found this helpful
I take this dietary supplement to meet GMP standards, especially as I’m currently being treated for Covid-19. The doctor advised two capsules twice daily before meals. Quercetin helps with respiratory infections, and bromelain enhances its absorption. Together, they support cardiovascular health.
8
Quercetin and curcumin synergize cardiovascular effects
We investigated how quercetin, specially prepared in solid lipid nanoparticles, works alongside curcumin to combat atherosclerosis. Using human vascular smooth muscle cells, we treated them with these compounds and observed their effects on inflammation and oxidative stress.
Our results showed that this combination significantly reduced harmful oxidative stress and inflammation associated with a key signaling pathway in cells. This suggests that their synergistic effect could offer a promising new treatment for cardiovascular diseases linked to chronic inflammation.
Our results showed that this combination significantly reduced harmful oxidative stress and inflammation associated with a key signaling pathway in cells. This suggests that their synergistic effect could offer a promising new treatment for cardiovascular diseases linked to chronic inflammation.
9.5
Quercetin improves post-MI recovery
We investigated the potential of quercetin, a natural compound found in fruits and vegetables, to prevent challenges after a heart attack (myocardial infarction, or MI). By treating mice with quercetin before inducing MI, we observed significant improvements in heart function, survival rates, and reduced heart damage caused by inflammation and fibrosis.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
The study also revealed that quercetin helps shift immune cells toward a healing state, crucial for recovery. This promising research opens the door for quercetin's use in treating cardiac issues related to heart attacks.
8
We explored the effects of quercetin on cardiac fibrosis, a major concern in cardiovascular diseases. Using an experiment on mice, we administered quercetin after inducing cardiac stress and assessed its impact on heart function and fibrosis. Our findings showed that quercetin significantly reduced cardiac fibrosis and helped reverse cell proliferation caused by stress hormones. This protective effect was linked to its regulation of the SIRT3 signaling pathway. Overall, quercetin presents a promising avenue for addressing heart fibrosis.
8
We discovered that quercetin, a popular flavonoid, can significantly reduce atherosclerosis in mice with a normal gut microbiome. However, this effect was not observed in germ-free mice, indicating that gut bacteria play a crucial role.
The treatment boosted levels of specific compounds linked to the health benefits of quercetin, particularly in conventional mice. These findings suggest that the metabolism of quercetin by gut microbes is essential for its cardiovascular benefits.
The treatment boosted levels of specific compounds linked to the health benefits of quercetin, particularly in conventional mice. These findings suggest that the metabolism of quercetin by gut microbes is essential for its cardiovascular benefits.
References
- Ji K, Han M, Yang M, Xu Q, Zhang Y. Integrated meta-analysis and network pharmacology analysis: evaluation of Zhigancao decoction as treatment for diabetic cardiomyopathy. Front Cardiovasc Med. 2025;12:1454647. doi:10.3389/fcvm.2025.1454647
- Shamsi M, Mohammadzadeh G, Hatami M, Roshanazadeh M, Noor-Behbahani M, et al. Dual Modulation of Canonical and Non-canonical TGF-β/ROS/Erk1/2 Pathways: Synergistic Activation of Nrf-2 and Antioxidant Enzymes (SOD1, GPx, HO-1) by Quercetin Loaded in Solid Lipid Nanoparticles and Curcumin in Atherosclerosis Therapy. Iran J Pharm Res. 2024;23:e151428. doi:10.5812/ijpr-151428
- Wang L, Lin S, Wei Q, Li T, Mo Q, et al. Preventive Administration of Quercetin Promotes Survival and Reduces Adverse Ventricular Remodeling after myocardial infarction through facilitating M2-like macrophage polarization. Int Immunopharmacol. 2025;151:114296. doi:10.1016/j.intimp.2025.114296
- Zheng G, Cao X, Jing Y, Wang L, Yan R, et al. An integrative approach for mechanistic insights into the atherosclerotic plaque-stabilizing properties of Danggui Buxue decoction. J Ethnopharmacol. 2025;343:119450. doi:10.1016/j.jep.2025.119450
- Domingos AE, Breves CMDC, Boa LF, de Souza IIA, Maciel L, et al. Quercetin Reduces the Susceptibility to Cardiac Reperfusion Arrhythmias in Ovariectomized Rats. Mol Nutr Food Res. 2025;69:e202400284. doi:10.1002/mnfr.202400284
- Manikanta K, NaveenKumar SK, Hemshekhar M, Thushara RM, Mugesh G, et al. Quercetin inhibits platelet activation and ER-stress mediated autophagy in response to extracellular histone. Phytomedicine. 2025;138:156386. doi:10.1016/j.phymed.2025.156386
- Long X, Tao S, Yang S, Li S, Rao L, et al. Quercetin improves heart failure by inhibiting cardiomyocyte apoptosis suppressing the MAPK signaling pathway. Nan Fang Yi Ke Da Xue Xue Bao. 2025;45:187. doi:10.12122/j.issn.1673-4254.2025.01.22
- Kasahara K, Kerby RL, Aquino-Martinez R, Evered AH, Cross TL, et al. Gut microbes modulate the effects of the flavonoid quercetin on atherosclerosis. NPJ Biofilms Microbiomes. 2025;11:12. doi:10.1038/s41522-024-00626-1
- Mahyar M, Ghadirzadeh E, Nezhadnaderi P, Moayedi Z, Maboud P, et al. Neuroprotective effects of quercetin on hippocampal CA1 neurons following middle cerebral artery ischemia‒reperfusion in male rats: a behavioral, biochemical, and histological study. BMC Neurol. 2025;25:9. doi:10.1186/s12883-024-04017-z
- Mkhize SA, Nthlane RA, Xhakaza SP, Verhaert PD, Baijnath S, et al. Decreased blood pressure with acute administration of quercetin in L-NAME-induced hypertensive rats. Basic Clin Pharmacol Toxicol. 2025;136:e14113. doi:10.1111/bcpt.14113
- Lin DW, Jiang YW, Wu C, Zhang H, Li YZ, et al. Quercetin Alleviates Cardiac Fibrosis via Regulating the SIRT3 Signaling Pathway. Cardiovasc Drugs Ther. 2024. doi:10.1007/s10557-024-07658-x
- Chen J, Lyu X, Yuan Q, Qin C, Yu H, et al. Dynamic and quantitative assessment of quercetin for cardiac oxidative stress injury prevention using sensitive cardiomyocyte based biosensing. Biosens Bioelectron. 2025;271:117045. doi:10.1016/j.bios.2024.117045
- Scalise M, Cianflone E, Quercia C, Pagano L, Chiefalo A, et al. Senolytics rejuvenate aging cardiomyopathy in human cardiac organoids. Mech Ageing Dev. 2025;223:112007. doi:10.1016/j.mad.2024.112007
- Goshovska Y, Pashevin D, Goncharov S, Lapikova-Bryhinska T, Lisovyi O, et al. Quercetin is a potential therapy for post-infarction NETosis formation. Naunyn Schmiedebergs Arch Pharmacol. 2025;398:5705. doi:10.1007/s00210-024-03602-w
