Quercetin source:  Quercetin is a plant pigment (flavonoid). It is found in many plants and foods, such as red wine, onions, green tea, apples, berries, Ginkgo biloba, St. John's wort, American elder, and others. Buckwheat tea has a large amount of quercetin. People use quercetin as a medicine.

Quercetin introduction: It is one of the most biologically active bioflavonoids. Quercetin acts as a potent polyphenol antioxidant and immune system modulator.Many of its immune support attributes are enhanced by its synergistic relationship with vitamin C. Quercetin is highly active in the skin and lining of the digestive tract .

Appearance:   Yellow green fine powder

Active ingredient: Quercetin

Test By:HPLC

Quercetin specifications:   Sophora Japonica Extract,Quercetin  95%-98%

Molecular weight:    302.24

Structural formula:

Quercetin Main benefits:

1. Improving blood capillary elastic, Anti-inflammatory

 2. Antioxidation and anti-cancer, especially prostatic cancer 

3. Preventing vascular disease

4. Maintain vascular resistance