Resveratrol: a plant polyphenol sourced from knotweed root

Resveratrol is a polyphenol made by several plants. The label names Polygonum cuspidatum root, also called Japanese knotweed, as its source.

It is best known for turning up in grapes and berries, and it rounds out the blend as the last listed botanical.*

At a glance

• Type: plant polyphenol.
• Source: Polygonum cuspidatum root.
• Often discussed for: antioxidant support.

The botanicals share one 510 mg blend, so the label does not list a separate amount for each. See all eleven ingredients.

This page is general, educational information, not medical advice. These statements have not been evaluated by the Food and Drug Administration.