Caoguo is the dried ripe fruit of Amomum tsaoko Crevost et Lemaire (Fam. Zingiberaceae).

Action: To remove cold-damp from the spleen and the stomach, and to stop malarial attacks.

Indications: Accumulation of Cold-damp in the spleen and the stomach manifested by epigastric distension, fullness and pain accompained by vomiting; malaria with paroxysms of chills and fever.

.