polygonum cuspidatum extract capsules resveratrol

Product Overview Polygonum Cuspidatum Extract, also known as Japanese Knotweed Extract, is a rich natural source of Resveratrol and other polyphenolic compounds. It is widely recognized in the global market as a premium Plant Extract used in Nutritional Ingredients, Anti-aging Ingredients, and Herbal Extracts. Due to its high concentration of trans-resveratrol, this extract is a preferred raw material for nutraceutical brands targeting antioxidant, longevity, and metabolic health formulations. B2B buyers in the US, EU, and AU markets prioritize high-purity Standardized Extracts, consistent sourcing, and OEM-ready formats. Content Note: Prepared by our technical team based on current scientific literature. Health claims comply with FDA/EFSA guidelines. Last reviewed: April 2026 According to a study in Journal of Ethnopharmacology (2002), Polygonum cuspidatum extract demonstrated strong antioxidant and anti-inflammatory potential due to its polyphenol content. According to a study in Fo…