Therapeutic issues of marijuana and THC (tetrahydrocannabinol).

This article summarizes current knowledge about the medicinal value of cannabis and its principal psychoactive ingredient, delta 9-tetrahydrocannabinol (THC), particularly in the control of nausea and vomiting, in glaucoma, and in reduction of spasticity in multiple sclerosis. The major issues in the controversy about marijuana and medicine, primarily moral and ethical, are discussed.