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.
Cayenne Pepper, capsicum fastigiatum. Official. Capsicum is a useful rubefacient suitable for prolonged application because never blistering. Capsicum is not sufficiently valued as a stimulant, especially in gastric inactivity, frequently noted in long-standing cases of malaria. Dose: 1 to 5 grains.