Serpentaria, Virginia Snakeroot, is a vascular stimulant, promoting secretion from the skin and mucous surfaces. It is used in the suppression of secretions from colds and in the course of fevers. In my own experience, a full teaspoonful of the fluidextract every three hours until three or four doses are taken is effective; but in the many chronic diseases in which it is recommended, it does not impress me at all favorably.