Benepure is a professional producer of Botanical Extract, Pharmaceutical Ingredients and Amino Acids in China, which manufactures Flavonoids products like Hesperidin, Diosmin, Hidrosmoin, Rutin, Naringin, Quercetin, Citrus Bioflavonoids,Troxerutin, Red Clover Extract, Soy Isoflavones over 15 years and has expanded to more products now Green Tea Extracts，Natural Sweeteners, Anthocyanidins & polyphenols, APIs and Amino Acids derivatives.

Quercetin is a plant pigment (flavonoid). It is found in many plants and foods, such as Sophora japonica, 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 is used for treating conditions of the heart and blood vessels including “hardening of the arteries” (atherosclerosis), high cholesterol, heart disease, and circulation problems. It is also 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 is also used to increase endurance and improve athletic performance.
 
Functions:
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, reduces cancer 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.

Applications:
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.