Wu Tou Tang (Aconite Main Tuber Decoction) — Herbal Remedy for Severe cold bi: excruciating joint pain, inability to bend joints, cold extremities, pain worse in cold weather. Modern: severe rheumatoid arthritis, gout with cold signs, severe osteoarthritis | Living Netism

A formula for severe cold bi (painful obstruction) with joint pain that does not bend. Uses the stronger Wu Tou (main tuber of aconite, more toxic than Fu Zi which is the lateral root) to powerfully w