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Quercetin is a potent antioxidant and has anti-inflammatory activity, protecting cellular structures and blood vessels from the damaging effects of free radicals. It improves blood vessel strength.

Botanical Name: Sophora Japonica
Active ingredients: Quercetin
Specification: 95% 98% Test by HPLC
Appearance: Light Yellow Fine Powder
Testing Method: UV/HPLC

Basic Information

Product Name: Quercetin
Botanical Name: Sophora Japonica
Specification: 95% 98%
Appearance: Light Yellow Fine Powder
Testing Method: UV/HPLC


  • Treating conditions of the heart and blood vessels including "hardening of the arteries" (atherosclerosis), high cholesterol, heart disease and circulation problems.

  • Increasing endurance and improving athletic performance.

  • Used for diabetes, cataracts, hay fever, peptic ulcer, schizophrenia, inflammation, asthma, gout, viral infections, chronic fatigue syndrome(CFS).

  • Preventing cancer and for treating chronic infections of the prostate. Quercetin has anticancer activity, inhibits PI3-kinase activity and slightly inhibits PIP Kinase activity, reduces cancer cell growth via type II estrogen receptors.


  • Applied in pharmaceutical field

  • Quercetin has a good expectorant, cough, and some asthma, for the treatment of chronic bronchitis.

  • There are also lower blood pressure, increased capillary resistance, reduce capillary fragility, lowering blood pressure, expansion of coronary artery, increase coronary blood flow and so the role of adjuvant therapy for patients with coronary heart disease and high blood pressure.

  • Because of the function of inhibition and paralysis to sensory nerve endings, it can be used as counter irritant. 

  • Applied in daily necessities field, aslo added into a large amount of oral cleaning products, such as dentifrices, mouthwash and tooth powder.

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