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. Quercetin inhibits the activity of catechol-O-methyltransferase that breaks down the neurotransmitter norepinephrine.

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 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.

Xi'an Boon Bio-technology Co., Ltd.(hereafter referred to as "Boon") is located in Xi'an High-tech Development Zone China and its botanical extract plant is located in San Yuan county on the outskirts Xi'an.


Boon is engaged in developing, manufacturing and selling the APIs and extracts of plants. Boon's headquarter and factory cover an area of 20000sqm and will win 3 pcs of GMP standard plant extract product line. All plant extracts are produced strictly in accordance with GMP and ISO standard.


Boon's products and manufacturing practices have continually met international quality standard, which is leaded by the professors and experts with years of experience in the pharmaceutical industry. We have also built long term partnership with Northwest University and Xi'an Jiaotong University, which provides the strong technical support for new products innovation and development.


Boon's products are mainly exported to America, Europe, Japan and Southeast Asia, as well as the Middle East.


"Quality first, Reputation first and Customer first" is the core cultural value of Boon. We believe the outstanding reputation arises from outstanding quality. With the advanced effort in product innovation and development, and efficient management system, Boon maintains leadership in the in competition, and are waiting to cooperate with more domestic and international partners for mutual benefits and win-win concept.