Tsaoko Classic Formulas … Natural Herb Library

Primary Actions

Dries dampness and disperses cold in the middle burner ... Cao Guo is used for abdominal fullness, cold-damp stagnation, poor appetite, foul turbidity, and a heavy obstructed digestive center.
Warms the Stomach and stops nausea or vomiting ... its strongly aromatic warming nature makes it useful when retching and heaviness arise from cold-damp obstruction rather than from heat.
Cuts malaria and transforms miasmatic turbidity ... traditional use extends to alternating fever-chills and epidemic damp-filth patterns where aromatic penetration is prioritized.

Da Yuan Yin ... the signature epidemic damp-turbidity and malaria-context formula in which Cao Guo penetrates membrane-source obstruction.
Cao Guo Yin and related malaria traditions ... classic use when foul dampness, obstruction, and alternating fever are central.
Cold-damp vomiting combinations with Hou Po, Ban Xia, or Gan Jiang ... practical middle-burner strategy when heaviness, nausea, and distension travel together.

Traditional herbology places Cao Guo among the strong aromatic dampness-transforming herbs that dry cold turbidity and address miasmatic obstruction.
Its malaria association is part of the older damp-filth tradition rather than a modern isolated antiplasmodial claim.