Dr. Kenawy's Quercetin
Dr. Kenawy's Quercetin

Dr. Kenawy's Quercetin

Olive Leaves Nutrition & Consultation Center
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What is quercetin?

It is a flavonoid, meaning it is a plant pigment similar in molecular structure to a flavone. It is also considered a potent antioxidant and is typically the main component in various fruits and vegetables red and orange pigmentation. The different sources of quercetin can be found in berries, apples, sweet potatoes, broccoli, grapes, tea, peppers, onions, and many more foods.

Antioxidant properties

Quercetin has antioxidant properties, which help with fighting free radicals. Antioxidants help protect cells against oxidative damage. Oxidative damage occurs when an excess of free radicals in the body overwhelms the body’s antioxidant defenses, Free radicals are unstable molecules in the body that can increase the risk of disease and aging. (1)


Anti-inflammatory Properties

Inflammation is a natural body process that occurs in response to stress and injuries and usually helps the body heal. However, chronic inflammation can harm the body and contribute to specific health conditions. Quercetin can help inhibit inflammation in the body. (2)  


Brain Health

Quercetin may reduce the risk of neurodegenerative diseases, such as Alzheimer’s or Parkinson’s Disease. Oxidative stress is an imbalance of free radicals and antioxidants in the body, which can lead to cell and tissue damage. Oxidative stress occurs naturally and plays a role in the aging process. This is was contributes to the development of neurodegenerative diseases. A study has found consuming quercetin-rich onion for 24 weeks reduces age-related cognitive decline. (3)


Heart Health

Diet and exercise play an important role in reducing the risk of heart diseases and stroke. Research suggests that quercetin may help protect heart health by mitigating blood vessel dysfunction mitigating endothelial dysfunction, and reducing heart disease risk factors like high blood pressure and atherosclerosis. (4). 

According to a study, taking quercetin supplements could be an effective way to reduce blood pressure. (5)

Side Effects

The natural antioxidants found in fruits and vegetables can be beneficial when consumed as part of a balanced and nutritious diet. However, quercetin may interact with some medications, so people should ask their doctor before taking a supplement. (6)


These statements have not been evaluated by The Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Information and statements made are for education purposes and are not intended to replace the advice of your General Practitioner. If you have a severe medical condition or health concern, see your physician.