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Obetrol is a pharmaceutical stimulant amphetamine used as an anoretic to treat exogenous obesity and ADHD, and is available today under the brand name Adderall. Obetrol was first approved by the FDA in the 1960's, however failed to achieve mass market success, despite being popular as a "clean" amphetamine for recreational use. Rights to the Obetrol formulation, consisting of four mixed dextro and levo amphetamine salts, were sold to Richwood by Rexar Pharmaceuticals in 1994, and re-approved by the FDA in 1996 for the treatment of Attention Deficit Disorder and Attention Deficit Hyperactivity Disorder under the brand name Adderall, which is sold in both time-release and immediate-release formulations, unlike Obetrol which only comes as an immediate release tablet. Obetrol is still available off-label to treat obesity, but its use is extremely rare.


Artist Andy Warhol was prescribed Obetrol for 5 years. Initially the prescription was intended to help him manage his weight, but eventually its primary purpose became to help him keep up with the activity levels of his Silver Factory associates. He gave up amphetamine following his shooting and hospitalization.