Chiniofon, a halogenated 8-hydroxyquinoline, is used as an antiamebic drug. This type of anti-amebic drug exerts an anti-amebic effect by inhibiting intestinal commensal bacteria and affects amoebic dysentery, but has no effect on extra-intestinal amoebic parasites.

Thonningianin B is a natural product from Penthorum chinense Pursh.

Zhebeirine (Puqiedinone), a steroidal alkaloid, is isolated from the bulbs of Fritillaria puqiensis. Zhebeirine exhibits antitussive and expectorant properties.