delta 9-Tetrahydrocannabinol (THC) as an antiemetic in patients treated with cancerchemotherapy; a double-blind cross-over trial against placebo.

A double-blind cross-over trial with delta 9-tetrahydrocannabinol (THC) and placebo was employed to test the antiemetic effect on nausea and vomiting after MOPP-therapy. Although THC had remarkable antiemetic effects, the side effects were severe. Most patients preferred the nausea and the vomiting after MOPP-therapy to the use of THC. A relation between the antiemetic action or the side-effects and the blood-level of THC could not be demonstrated.