Chinese Yam (Dioscorea opposita) goes by the name Shan Yao in traditional herbalism. The starchy tuber supplies complex carbohydrates and, in powder or extract form, gets taken with meals for digestive support. People also reach for it as a gentle source of energy, and some pair it with a balanced diet to maintain healthy blood sugar levels.
Concentrated extracts lack solid clinical backup. Ordinary food amounts carry a long safety record, but supplements and concentrated powders haven't been studied as deeply. Speak with a healthcare provider before you take any.