Quercetin, a plant pigment, is said to have antioxidant and anti-inflammatory benefits. This chemical compound (flavonoid) is naturally found in foods including apples, onions, teas, berries, red wine, and herbs like ginkgo biloba and St. John’s wort. It is also available in supplement form.1

Quercetin is sometimes used in various health conditions such as heart disease, cancer, arthritis, and COVID-19. However, there is no good scientific evidence to support taking it for these conditions.

This article discusses the purported uses of quercetin and its available research. It also covers potential side effects and drug-supplement interactions.

Benefits of Quercetin

1. Lowers Inflammation

2. Fights Allergies

3. Supports Heart Health

4. Helps Fight Pain

5. Might Help Improve Energy and Endurance

6. Might Help Fight Cancer

7. Helps Protect Skin Health

8. Protects Liver Health

Dosages of Quercetin

Optimal doses of quercetin have not been established for any specific conditions by the FDA or any other governing health authority at this time, so it’s up to you and your doctor to decide what amount works best for you.

For people who turn to quercetin supplements, common oral dosages are 500 milligrams taken twice daily, but it’s also definitely possible to experience benefits when taking lower doses.

Quercetin supplements are available in all types of pills or capsules and are commonly used in formulas along with other anti-inflammatory ingredients. For example, quercetin with bromelain (an anti-inflammatory enzyme found in pineapples) may be taken to help manage allergies.

Dosage form application

  • Pure powder form without excipients for research use.
  • Tablet or capsule for /dietary supplement/prescription /nootropics use.

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