Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 16 Researches
8.4
USERS' SCORE
Moderately Good
Based on 36 Reviews
7.2
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 how quercetin might help those suffering from heart failure. In our research, we utilized advanced databases to identify specific targets of quercetin, focusing on its effects on heart cells.
Our findings suggest that quercetin may work by reducing cell death in heart cells via the MAPK signaling pathway. Notably, it helped lower a key ratio linked to cell survival and decreased markers of cell stress. Overall, quercetin shows promise in battling heart failure symptoms, but further studies are needed to confirm these effects in broader settings.
Our findings suggest that quercetin may work by reducing cell death in heart cells via the MAPK signaling pathway. Notably, it helped lower a key ratio linked to cell survival and decreased markers of cell stress. Overall, quercetin shows promise in battling heart failure symptoms, but further studies are needed to confirm these effects in broader settings.
Read More
9
Quercetin shows promise for heart recovery
We investigated how quercetin, a natural compound found in fruits and vegetables, could help prevent damage after a heart attack (myocardial infarction). Our study used adult male mice to analyze the effects of two weeks of quercetin treatment before simulating a heart attack.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
Read More
9
We aimed to understand how quercetin, a natural flavonoid, might help protect against heart issues linked to hormonal changes in postmenopausal conditions. In our study, ovariectomized female rats received either quercetin treatment or a control substance for four weeks.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
Read More
Most Useful Reviews
9
Natural antihistamine
7 people found this helpful
Having suffered from allergies and asthma for years, I turned to natural solutions like quercetin. This supplement reduces my allergic reactions and systemic inflammation, helping mitigate symptoms associated with heart disease.
Read More
9
Temperature normalised
7 people found this helpful
Quercetin remarkably helped me return my unexplained fever to normal, which persisted for a year despite concerns about my heart disease. I initially began it upon my doctor’s suggestion and found it effective after switching to a higher dose.
Read More
9
Chemotherapy support
5 people found this helpful
Since September 2020, I've been using quercetin while preparing for surgery due to my varicose veins. After undergoing chemotherapy, I believe this supplement has helped with inflammation and provided support regarding my heart disease risk.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 16 Researches
8.4
- All Researches
9
Quercetin shows promise for heart recovery
We investigated how quercetin, a natural compound found in fruits and vegetables, could help prevent damage after a heart attack (myocardial infarction). Our study used adult male mice to analyze the effects of two weeks of quercetin treatment before simulating a heart attack.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
Read More
9
We aimed to understand how quercetin, a natural flavonoid, might help protect against heart issues linked to hormonal changes in postmenopausal conditions. In our study, ovariectomized female rats received either quercetin treatment or a control substance for four weeks.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
Read More
9
We explored how senolytics, specifically dasatinib and quercetin, can rejuvenate aging heart muscle cells. By modeling doxorubicin-induced cardiomyopathy in human cardiac organoids, we treated these aged cells with the senolytics after they exhibited age-related damage.
Our findings showed that this treatment reduced oxidative stress and cellular damage, improving cell function and structure. Overall, senolytics were effective in restoring the viability and regenerative capabilities of these heart cells, highlighting their potential for treating age-related heart conditions.
Our findings showed that this treatment reduced oxidative stress and cellular damage, improving cell function and structure. Overall, senolytics were effective in restoring the viability and regenerative capabilities of these heart cells, highlighting their potential for treating age-related heart conditions.
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9
We explored whether quercetin could help reduce heart damage following a heart attack. In our study, Wistar rats underwent a procedure simulating a heart attack and received quercetin before the reperfusion phase. The results were encouraging—quercetin treatment improved heart function and reduced the formation of harmful substances called NETs. This suggests that quercetin may be a valuable tool for protecting the heart during recovery from cardiac events. However, our findings mainly apply to animal models and require further research in humans for validation.
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9
We explored how Danggui Buxue Decoction (DBD) and its ingredients, such as quercetin, influence coronary artery dilation. By examining pre-constricted coronary arteries in a lab setting with rats, we found that the active components of DBD effectively activated potassium channels, leading to increased blood flow in the coronary arteries.
While DBD shows promise for treating conditions like coronary heart disease, more research is needed to fully understand the mechanisms behind its effects. Overall, our findings suggest it could be a beneficial therapy for those suffering from vascular issues.
While DBD shows promise for treating conditions like coronary heart disease, more research is needed to fully understand the mechanisms behind its effects. Overall, our findings suggest it could be a beneficial therapy for those suffering from vascular issues.
Read More
User Reviews
USERS' SCORE
Moderately Good
Based on 36 Reviews
7.2
- All Reviews
- Positive Reviews
- Negative Reviews
9
Natural antihistamine
7 people found this helpful
Having suffered from allergies and asthma for years, I turned to natural solutions like quercetin. This supplement reduces my allergic reactions and systemic inflammation, helping mitigate symptoms associated with heart disease.
Read More
9
Temperature normalised
7 people found this helpful
Quercetin remarkably helped me return my unexplained fever to normal, which persisted for a year despite concerns about my heart disease. I initially began it upon my doctor’s suggestion and found it effective after switching to a higher dose.
Read More
9
Chemotherapy support
5 people found this helpful
Since September 2020, I've been using quercetin while preparing for surgery due to my varicose veins. After undergoing chemotherapy, I believe this supplement has helped with inflammation and provided support regarding my heart disease risk.
Read More
9
Anti-inflammatory benefits
5 people found this helpful
Many overlook the benefits of quercetin, which acts as a natural anti-inflammatory and antihistamine. I've found it useful in alleviating allergy symptoms and inflammation, proving beneficial in my fight against heart disease.
Read More
9
Blood pressure improvement
3 people found this helpful
This is not my first time using it. My parents take it to maintain their heart and blood vessels. Combined with Q10 and Omega 3, it has shown excellent results, particularly in lowering my dad's blood pressure.
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Frequently Asked Questions
7.5
Allergy relief
142 people found this helpful
I started taking quercetin for allergies, as well as for its antioxidant properties and to prevent respiratory diseases. The capsules are easy to swallow and have a pleasant aroma. After a week of taking 500 mg, I noticed improvements in my allergies and digestion. Quercetin also strengthens blood vessel walls and helps reduce the risks associated with heart disease.
9
Temperature normalised
7 people found this helpful
Quercetin remarkably helped me return my unexplained fever to normal, which persisted for a year despite concerns about my heart disease. I initially began it upon my doctor’s suggestion and found it effective after switching to a higher dose.
7.5
Energy restoration
1 people found this helpful
My naturopath suggested I take quercetin daily, especially during my recovery from heart surgery. This supplement, combined with probiotics, significantly boosted my energy levels, and I now use it as part of a regimen to protect against COVID. The quality has been excellent.
9
Natural antihistamine
7 people found this helpful
Having suffered from allergies and asthma for years, I turned to natural solutions like quercetin. This supplement reduces my allergic reactions and systemic inflammation, helping mitigate symptoms associated with heart disease.
9
Supports heart health
1 people found this helpful
Quercetin has numerous benefits, including aiding in the elimination of inflammation and supporting heart health. It strengthens blood vessels, making physical exertion easier. I take this supplement periodically to experience its advantages.
7.5
Prevents heart complications
1 people found this helpful
I highly recommend quercetin for those recovering from COVID and for vascular repair. It is a potent antioxidant that protects cells and prevents heart disease, particularly by inhibiting histamine production.
2
No benefit felt
I tried quercetin for pollen allergies, but it did not help. I didn't notice any positive effects on my immunity or heart disease, as I fell ill with a respiratory illness while taking it.
7.5
Cardiovascular protection
3 people found this helpful
Quercetin is a potent antioxidant from the flavonoids, aiding cell membrane protection against free radicals and strengthening small blood vessels, thus preventing heart disease. Nau Foods' quercetin, combined with bromelain, boosts immune cell activity and antibody production. It effectively treats arthritis, asthma, and inflammation while combating viral infections.
7.5
Benefits for heart
1 people found this helpful
Excellent quality product with beneficial ingredients, particularly CoQ10. It acts as an antioxidant and provides good support for my heart health.
7.5
Shortened cold duration
1 people found this helpful
I initially sought quercetin with bromelain for its health benefits and to ease some pain. I found it also improved my immune system remarkably. After taking it alongside vitamin C and zinc during a cold, I was astounded at how quickly it alleviated my symptoms.
0
Adverse effects observed
52 people found this helpful
The effectiveness was disappointing with adverse effects, including adrenal fatigue and arrhythmia, which made me cautious about the use of quercetin. I took it to address heart disease and histamine levels but experienced increased heart rate and other complications instead.
9
Quercetin shows promise for heart recovery
We investigated how quercetin, a natural compound found in fruits and vegetables, could help prevent damage after a heart attack (myocardial infarction). Our study used adult male mice to analyze the effects of two weeks of quercetin treatment before simulating a heart attack.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
The results were encouraging: quercetin improved heart function, enhanced survival rates, and minimized heart damage. Additionally, it appeared to reduce inflammation and increase protective immune responses in the heart. Overall, quercetin shows potential as a helpful player in heart disease recovery.
9
We aimed to understand how quercetin, a natural flavonoid, might help protect against heart issues linked to hormonal changes in postmenopausal conditions. In our study, ovariectomized female rats received either quercetin treatment or a control substance for four weeks.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
We found that quercetin significantly reduced heart damage and the risk of abnormal heart rhythms after restoration of blood flow. Additionally, it seemed to support healthier mitochondrial function. Our findings suggest that quercetin could be beneficial in managing heart health during menopause.
8
This study investigated how quercetin (QUE) affects heart injury linked to sepsis. By mimicking sepsis-induced cardiomyopathy in human heart cells, we found that LPS treatment leads to reduced cell growth and increased injury.
However, QUE showed potential to counter these effects, decreasing cell death and inflammation. Additionally, QUE worked by regulating the ALOX5/PI3K/AKT pathway, indicating a promising role in treating heart conditions related to sepsis.
However, QUE showed potential to counter these effects, decreasing cell death and inflammation. Additionally, QUE worked by regulating the ALOX5/PI3K/AKT pathway, indicating a promising role in treating heart conditions related to sepsis.
8
Isoquercitrin aids heart protection
We investigated the effects of isoquercitrin (IQC) in combating cardiotoxicity caused by the cancer drug doxorubicin (DOX). Analysis highlighted over 7,800 genes affected by DOX, with IQC showing significant promise by downregulating key inflammatory genes.
Our findings suggest IQC can help reduce inflammation and oxidative stress in heart cells, marking it as a potential natural therapy for heart damage during cancer treatment. We identified critical immune markers that IQC targets, paving the way for better strategies to support heart health in cancer patients.
Our findings suggest IQC can help reduce inflammation and oxidative stress in heart cells, marking it as a potential natural therapy for heart damage during cancer treatment. We identified critical immune markers that IQC targets, paving the way for better strategies to support heart health in cancer patients.
8
Quercetin shows promise against cardiotoxicity
We investigated the potential benefits of quercetin (QE) in combating heart damage caused by aluminum phosphide (AlP) in a rat model. The study divided the rats into groups, including controls and those treated with QE after exposure to AlP.
We noticed that QE significantly improved heart function and reduced damage, as shown by better biomarkers and lower inflammation levels. This suggests that quercetin has promising antioxidant and anti-inflammatory properties that could help in treating cardiotoxicity from AlP exposure.
We noticed that QE significantly improved heart function and reduced damage, as shown by better biomarkers and lower inflammation levels. This suggests that quercetin has promising antioxidant and anti-inflammatory properties that could help in treating cardiotoxicity from AlP exposure.
References
- 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
- Alam H, Bailing W, Zhao F, Ullah H, Ullah I, et al. An Integrated Network Pharmacology and RNA-seq Approach for Exploring the Protective Effect of Isoquercitrin in Doxorubicin-Induced Cardiotoxicity: Identification of Novel Genes. Cardiovasc Toxicol. 2025;25:541. doi:10.1007/s12012-025-09968-4
- 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
- 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
- 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
- de Oliveira Silva T, Lunardon G, Lino CA, de Almeida Silva A, Zhang S, et al. Senescent cell depletion alleviates obesity-related metabolic and cardiac disorders. Mol Metab. 2025;91:102065. doi:10.1016/j.molmet.2024.102065
- Mostafa EMA, Atta R, Maher SA, El-Kherbetawy MK, Ameen AM. Quercetin and its potential therapeutic effects on aluminum phosphide-induced cardiotoxicity in rats: Role of NOX4, FOXO1, ERK1/2, and NF-κB. Tissue Cell. 2024;91:102622. doi:10.1016/j.tice.2024.102622
- An W, Tian Q, Guo P, Chen M, Zhang T, et al. Danggui Buxue Decoction and its components dilate coronary artery through activating the inward rectification K channels pathway. J Ethnopharmacol. 2025;338:119064. doi:10.1016/j.jep.2024.119064
- Song J, Li S, Zhang B, Wu J, Zhong A. Quercetin protects human coronary artery endothelial cells against hypoxia/reoxygenation-induced mitochondrial apoptosis via the Nrf2/HO-1 axis. Biomed Res. 2024;45:197. doi:10.2220/biomedres.45.197
- Guan F, Du H, Li J, Ren H, Dong A. Quercetin Alleviates LPS-Stimulated Myocardial Injury through Regulating ALOX5/PI3K/AKT Pathway in Sepsis. Cardiovasc Toxicol. 2024;24:1116. doi:10.1007/s12012-024-09901-1
- Chen Q, Wang J, Sun L, Ba B, Shen D. Mechanism of Astragalus membranaceus (Huangqi, HQ) for treatment of heart failure based on network pharmacology and molecular docking. J Cell Mol Med. 2024;28:e18331. doi:10.1111/jcmm.18331
- Chen YF, Qiu Q, Wang L, Li XR, Zhou S, et al. Quercetin Ameliorates Myocardial Injury in Diabetic Rats by Regulating Autophagy and Apoptosis through AMPK/mTOR Signaling Pathway. Am J Chin Med. 2024;52:841. doi:10.1142/S0192415X24500344
- Wang X, Xing X, Huang P, Zhang Z, Zhou Z, et al. A Chinese classical prescription Xuefu Zhuyu decoction in the treatment of coronary heart disease: An overview. Heliyon. 2024;10:e28919. doi:10.1016/j.heliyon.2024.e28919
- Hu D, Li R, Li Y, Wang M, Wang L, et al. Inflammation-Targeted Nanomedicines Alleviate Oxidative Stress and Reprogram Macrophages Polarization for Myocardial Infarction Treatment. Adv Sci (Weinh). 2024;11:e2308910. doi:10.1002/advs.202308910
- Jing J, Fang S, Li Y, Liu W, Wang C, et al. An enhanced cardio-protective effect of nanoparticles loaded with active components from Polygonum orientale L. against isoproterenol-induced myocardial ischemia in rats. Int J Pharm. 2024;655:124047. doi:10.1016/j.ijpharm.2024.124047
