Jarrow Formulas® Resveratrol contains 100 mg of resveratrol (3,4’,5-trihydroxystilbene) and resveratrol glucosides (piceids) extracted from Hu zhang (“tiger cane”) root, also known as Polygonum cuspidatum.|Jarrow Formulas® Resveratrol provides approximately 90% resveratrol in the trans configuration.|As an antioxidant, resveratrol supports cardiovascular function.