The dried rhizome and rootlets of two or three varieties of Aristolochioe, found in North America. The taste and odor resemble camphor. It contains a resin, a volatile oil, bitter principle, etc., and is a stimulant tonic. Its only official use is in the compound (Tr. of Cinchona).

Preparations

Tinctura Serpentariae. Not Official. Tincture Of Serpentaria

Strength, 20%. Dose, ʒ i.-4 mils.

Fluidextractum Serpentariae. Not Official. Fluidextract Of Serpentaria

Dose,  xv.-I mil.

To be given half an hour before meals.