Edit. Marinol is schedule III, downgraded from schedule II (1986) to schedule III (1996). Marinol is dronabinol, synthetic THC, FDA approved for AIDS and chemo patients. Many patients find it disagreeable. The much better tolerated and more effective natural THC, a schedule 1 drug since 1970, is federally forbidden for any use. Who said science, logic and common sense mattered when money talks?