Resveratrol is a polyphenolic compound with antioxidant activity found in grapes, wine, blueberries, cranberries, and peanuts. While red wine has been popularized as an important source of resveratrol, amounts vary widely. The maximum content of resveratrol in red wine extracts available for use in dietary supplements is 20%. In contrast, root extracts of Japanese Knotweed (Polygonum cuspidatum) provide up to 50% trans-resveratrol content, the same form as found in red wine. Resveragen provides 250 mg of trans-resveratrol from Polygonum cuspidatum root.

Please note that Prothera has rebranded under the Klaire Labs label. During this transition period, the product received may be labelled as Prothera or Klaire Labs. There have been no changes to product names or ingredients. Please search Klaire Labs for a complete list of products.

These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.