Principal alkaloid of Ipecac. A powerful amebicide, but is not a bactericide. Specific for amebiasis; of remarkable value in treatment of amebic dysentery; also as a remedy in pyorrhoea, 1/2 gr. Daily for three days, then less. Emetin, 1/2 gr. Hypodermically, in Psoriasis. Emetin hydroch. 2X, diarrhoea with colicky, abdominal pains and nausea. Emetin for endameba dysentery. In physiological doses must be carefully watched. May produce hepatization of lungs, rapid heart action, tendency for the head to fall forward and lobar pneumonia.