[ Sources] Vaccinium Macrocarpon L. [ Active ingredient] 1.Anthocyandins 2.Anthocyanin Appearance Violet-red fine powder Odor Characteristic Assay( HPLC) Anthocyandins/ Anthocyanin > 25 Sieve Analysis 100% pass 80 mesh # ! 3 84082-34-8 Structural Formula: C27H31O16 [ Pharmacology function] Improving the Urinary System preventing urinary tract infection, softening blood capillary, eliminating eyestrain, improving eyesight and delaying cerebral nerve to aging; Enhancing the heart function and resisting cancer; It has curative effect on immunity diseases of blood capillary caused by diabetes.