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Quercetin


What is quercetin?

Also known as bioflavonoid or flavonoid, it can be found in red wine, green tea, black tea, in vegetables such as asparagus, broccoli, tomatoes, cabbage, cauliflower, green beans and in fruits such as apples and berries. Bioflavonoids show potent antioxidant properties.

What are the health benefits of taking quercetin?

Bioflavonoids (and there are thousands of them) have anti-inflammatory, antioxidant, anti-viral and anti-cancer benefits. It also seems to boost the immune system. Bioflavonoids are also used to treat varicose veins and hemorrhoids.

It is suggested to treat cataracts, diabetes, fluid retention, allergies, asthma and gout.

Animal studies have shown bioflavnoids to offer protection against heart disease possibly by protecting the blood vessels against damage from atherosclerosis (hardening of the arteries). It also helped to lower uric acid levels.

It is shown that in regions of the world where people eat foods rich in quercetin, the risk of developing heart disease, pancreatic cancer and lung cancer is lowered.

Clinical studies in humans have shown quercetin to help treat the symptoms of chronic prostate infection (prostatitis).

Does this supplement cure cancer?

Studies done in lab on cancer cells show that this natural supplement can stop cancer cell from growing and this is very promising. There are no clinical studies to prove that bioflavanoids treat or cure cancer in humans.

However, if you suffer from cancer, it is important that you follow a healthy diet in general. This includes eating foods rich in bioflavonoids.

What side effects can I expect from taking quercetin?

It is safe as it is found in many foods. Taking this supplement in a concentrated pill form may cause side effects such as headache, stomach ache and tingling sensation of the fingers and toes.

Can this supplement help with asthma and allergies?

Studies seem to show that bioflavoids may prevent allergies (hay fever) by preventing cells from releasing histamine (similar to some prescription drugs do).

It has been suggested that this supplement could be useful in treating people with asthma, although there are no scientific studies done in humans. (People who suffer from asthma often also suffer from hay fever as well.)

What dose should I take?

Dosage ranging from 100 to 500 mg to be taken twice or three times daily have been used. Start with the lower dose first and increase slowly to avoid possible side effects.

Pharmacist Tom's recommendations: Bioflavanoids is getting attention lately. Its antioxidant benefits are well known and it is something your body can always use.

Take inventory of your diet to see if you eat enough foods rich in bioflavonoids. Then consider supplementing with the concentrated form if you feel you would like more of it.

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Evidence of Benefits (Leaf Rating System)

natural remedies review unbiased benefits and side effects Hemorrhoids / Varicose Veins
natural remedies review unbiased benefits and side effects Prostatitis
natural remedies review unbiased benefits and side effects Anti-inflammatory, anti-cancer, antioxidant benefits
natural remedies review unbiased benefits and side effects Allergies / hay fever



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Revised: January 5, 2010

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