About this ingredient
Polygonum Cuspidatum Extract is a botanical ingredient obtained from the root of Japanese knotweed (Polygonum cuspidatum), also known as Reynoutria japonica or Hu Zhang. It is widely recognized as a natural source of resveratrol, a plant-based polyphenol studied for its antioxidant properties. The extract may also contain polydatin and other naturally occurring plant compounds. It is commonly used in dietary supplements focused on antioxidant, cardiovascular, and general wellness support. Research on many health claims remains limited, and the extract should not be considered a treatment for medical conditions.