Marijuana ingredient used legally in pharmaceutical product CMAJ 1997;156:973 © 1997 Canadian Medical Association The controversy over referenda in California and Arizona that called for the legalization of marijuana for medical purposes prompted Unimed Pharmaceuticals to issue a news release stating that a pure synthetic form of marijuana's active ingredient, THC, is legally available in a prescription drug. Dronabinol is used to treat nausea and vomiting associated with certain cancer chemotherapies. Send a letter to the editor responding to this article Envoyez une lettre à la rédaction au sujet de cet article | CMAJ April 1, 1997 (vol 156, no 7) / JAMC le 1er avril 1997 (vol 156, no 7) |