Caffein

{kaf’-e-in) \_caffea, coffee], C8H10N4- 02 -j- H20. An alkaloid found in the leaves and beans of the coffee-tree, in tea, in Paraguay tea, and in guarana, the roasted pulp of the fruit of Paullinia sorbilis. It occurs in long, silky needles, slightly soluble in cold water and alcohol, with a feebly bitter taste. It is a cerebrospinal, circulatory, and renal stimulant. See Caffea. Q. citrate. Dose gr. j-v (0.065-0.32). Sodium and Caffein benzoate, and Sodium and Caffein salicylate are used hypodermically. Dose gr. iij—v (0.2-0.32). 164