Quercetin is a type of plant-based chemical, or phytochemical, known as a flavonoid (see also Phytochemicals). Good sources include apples, onions, teas, red wines, and many other foods. Quercetin is also available as a dietary supplement.

quercetin 4

Basic Information:

Product Name: Quercetin
CAS No: 117-39-5
Color: Green yellow powder
Purity: 95%, 98%
Certificate: KOSHER, Halal, ISO9001, IQNET


1) Improving blood capillary elastic, Anti-inflammatory

2) Antioxidation and anti-cancer, especially prostatic cancer

3) Preventing vascular disease

4) Maintain vascular resistance


1. Quercetin may expel phlegm and arrest coughing, it can also be used as anti-asthmatic.

2. Quercetin has anticancer activity, inhibits PI3-kinase activity and slightly inhibits PIP Kinase activity, reducescancer cell growth via type II estrogen receptors.

3. Quercetin may inhibit histamine release from basophils and mast cells.

4. Quercetin may control the spread of certain viruses within the body.

5. Quercetin may help reduce tissue destruction.

6. Quercetin may also be beneficial in the treatment of dysentery, gout, and psoriasis.


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