Resveratrol is a polyphenol compound that is found in high concentrations in grape skins and berries. It is currently often used as a dietary supplement.
Many resveratrol supplement sold on the market are extracted from knotweed, and some are made from grape extracts.
In some experiments, resveratrol may help with some diseases. For example, polyphenols are believed to have antioxidant properties and are good for the heart.
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