Calumbin

Cissampelina, the intensely sweetish-bitter principle found in this body, is very like calumbin in some physical properties; yet we have been wont to associate other therapeutic ideas with pareira, than with calumba.

CALUMBÆ RADIX (Kalumbo, Portuguese). The root of the Cocculus palmatus, one of our most useful stomachics and tonics. It contains a bitter principle, called calumbin.

It also contains bitter terpene-dilactones, such as calumbin and dihydronaphthalene (chasmanthin and palmanin).