Serpentariae Radix-Serpentary Root.-The dried rhizome of Aristolochia Serpentaria. From the southern parts of North America.

Characters.-A small roundish rhizome, with a tuft of numerous slender rootlets, about three inches long, yellowish; of an agreeable camphoraceous odour, and a warm bitter camphoraceous taste.

Composition.-Serpentary contains chiefly a volatile oil and resin, with some bitter principle.

Preparations.

1. Infusum Serpentariae

Infusum Serpentariae. 1 in 40. Dose, 1 to 2 fl.oz.

2. Tinctura Serpentariae-1 in 8. Dose,1/2 to 2 fl.dr.

Action And Uses

Serpentary possesses local and general stimulant and tonic properties, closely resembling those of valerian and cascarilla. It is occasionally used in low, nervous, despondent, and excitable conditions, as well as in low fevers and febrile states.