... Capsule InformationHow worksThe key ingredient, resveratrol, is expertly combined with red grape skin, green tea, pine bark and turmeric to ... Resveratrol?Resveratrol is an exciting natural compound found in red wine, red grape skin, Japanese Knotweed, peanuts and some berries. ... and joint mobility. Many scientists also believe it (along with other natural substances found in grape skin) to be ...