Giant Knotweed Rhizome is the dried rhizome and root of Polygonum cuspidatum Sieb. et Zucc. (Fam. Polygonaceae).

Action: To dispel wind and damp, to eliminate blood stasis and alleviate pain, to relieve cough, and to resolve phlegm.

Indications: Arthralgia; jaundice caused by damp-heat; amenorrhea; mass formation in the abdomen;
cough with profuse expectoration; scalds and burns; traumatic injuries; carbuncles and sores.

Usage: For external use, appropriate quantity to be made into decoction or ointment and applied topically.

Precaution: Used with caution in pregnancy.