Resveratrol is a naturally occurring polyphenol compound present in various plants and fruits, with the highest concentrations found in the skins and seeds of red grapes, grape juice, and red wine. Additionally, peanuts, blueberries, cranberries, pomegranates, tea, and dark chocolate are also recognized as alternative dietary sources of resveratrol. Resveratrol supplements are commonly derived from the roots of the Japanese knotweed plant – Polygonum cuspidatum.