Resveratrol is a naturally occurring phytoalexine found in medicinal plants. resveratrol is an active component extracted from huzhang(polygonum cuspidatum) in china. \n\nit is an antioxidant phenol and a potent vasodilator that inhibits serum triglyceride synthesis, lipid peroxidation and platelet aggregation. \n\nit is extensively used for treatment of blood vessel disease such as atheroscler osis and hyperlipidemia. in addition,it has anti-virus and anti-inflammatory activity, can treat acute microbial infections and viral hepatitis etc.