Quercetin Powder is extracted from the Sophora flavescens Ait. 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 not only participates in the oxidation in vitro, can inhibit DNA oxidative damage, but also can protect tissues from oxidative damage by reducing the concentration of peroxide in tissues in vivo.As an antioxidant, it reduces LDL cholesterol and offers protection from heart disease. Quercetin blocks an enzyme that leads to accumulation of sorbitol, which has been linked to nerve, eye, and kidney damage in diabetics. If you want to buy Quercetin Powder, you  can contact us. Product name sophora japonica extract Color Light Yellow Powder MOQ 1kg Specification 5%-98% 1. Applied in health field, Quercetin Dihydrate Powder is usually made into tablets, capsule and granule to warm the kidney, strengthen the spleen and enhance human immunity. 2. Applied in food field,Quercetin Powder bulk is mainly used in kinds of beverage, liquor and foods to enhance human immunity and anti-aging.   1. May expel phlegm and arrest coughing, it can also be used as anti-asthmatic. 2. Pure Quercetin powder has anticancer activity, inhibits PI3-kinase activity and slightly inhibits PIP Kinase activity, reducescancer cell growth via type II estrogen receptors. 3. Quercetin bulk powder may inhibit histamine release from basophils and mast cells. 4. Pure bulk Quercetin may control the spread of certain viruses within the body. 5. Pure Quercetin Dihydrate Powder may also be beneficial of dysentery, gout, and psoriasis.