Giant Knotweed extract

Giant Knotweed extract Giant Knotweed extract Effectiveness: Cardiovascular health 1. Sources and Habitat Giant Knotweed Rhizome is the dry rhizome and root of Polygonum cuspidatum Sieb. et Zucc. Harvest at spring and autumn every year, and remove the fibrous root, make it clean, and then cut it into short pieces or junks, open-air drying. 2. Descriptions and Specifications of Product Content Specifications: 50%, 98% Resveratrol Test by HPLC Molecular Formula: C14H12O3