Quercetin 500

  • 500 mg, 200 capsules
  • Item # 04129

Quercetin 500

  • 500 mg, 200 capsules
  • Item # 04129

Quercetin is a flavonol (a subclass of flavonoids) and is a potent antioxidant, providing cardiovascular protection by reducing oxidation of LDL cholesterol. Quercetin is one half of the rutin molecule, another flavonol, and is the more active antioxidant.

Quercetin supports cellular health and function. In human cell culture studies, it has been shown to block the manufacture and release of inflammation-causing substances,1,2 which can help support a healthy immune response to the seasonally changing environment. It also helps promote a healthy cardiovascular system by preserving endothelial integrity3 and supporting healthy blood glucose levels for those already within normal range.4

1. Arch Pharm Res. 2008 Oct;31(10):1303-11.
2. Neuroimmunomodulation. 2006;13(3):179-86.
3. Eur J Cardiovasc Prev Rehabil. 2005;12:596-600.
4. Biochem J. 2005;386:471-8.

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Serving Size 1 capsule

Servings Per Container 200

Amount Per Serving


500 mg

Other ingredients: Cellulose, silicon dioxide and magnesium stearate (vegetable source).

Capsule consists of gelatin. No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts

Dosage and Use
  • Take one capsule per day with meals, or as directed by your qualified health care consultant.

Keep out of reach of children.

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

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Quercetin 500

500 mg, 200 capsules


$0.23/count | 200 Day Supply