This section is from the book "Botanic Drugs Their Materia Medica, Pharmacology and Therapeutics", by Thomas S. Blair. Also available from Amazon: Botanic Drugs, Their Materia Medica, Pharmacology and Therapeutics.
Black Pepper, Piper nigrum, official in several countries and in the U. S. Piperine (av. dose, 3 gr.) is a base obtained from it. The oleoresin is given in 1/2 grain doses. Used externally as counterirritants and internally as aromatic and stimulant carminatives.