... Andmodernuses:Huzhang ("tiger cane") or giant knotweed is an east Asian species (Polygonum cuspidatum), belonging ... , cytotoxic, and antioxidant properties, among others. Huzhang is also a concentrated source of resveratrol (3,5,4 ... cyclic blood-flow reductions caused by platelet-mediated thrombosis. Active Compounds:Huzhang is characterized by anthraquinones and their glycosides, ...