Polygonum Cuspidatum Extract, commonly known as Japanese Knotweed or Hu Zhang in Traditional Chinese Medicine, is a premier botanical source of Trans-resveratrol. Historically used to "invigorate the blood" and clear heat, modern science has validated its role as a powerful antioxidant and anti-inflammatory agent. Because its roots contain concentrations of resveratrol significantly higher than those found in grapes, it is the primary industrial source for high-purity longevity supplements.

Beyond resveratrol, the extract contains Polydatin and Emodin, which work synergistically to support cellular health, cardiovascular function, and metabolic balance. It is widely recognized for its ability to fight "inflammaging"—the chronic, low-grade inflammation that characterizes the aging process.

• Rich in Trans-Resveratrol: Contains the most bioavailable form of resveratrol, with concentrations up to 100–400 times higher than in grapes.
• High Polydatin Content: Naturally includes Polydatin, a precursor that enhances water solubility and intestinal absorption.
• Standardized Purity: Typically standardized to 50% or 98% Trans-resveratrol using HPLC testing to ensure therapeutic consistency.
• Broad Spectrum Bioactivity: Features a unique profile of stilbenes and anthraquinones that provide synergistic antioxidant effects.