 A formulation of amphetamine mixed salts that included methamphetamine was approved by the U.S. Food and Drug Administration (FDA) on January 19, 1960 under the name Obetrol.Between 1965 and 1973, this formula was offered in 10 mg and 20 mg strength through Obetrol Pharmaceuticals division of an American pharmaceutical company Rexar under the trade name Obetrol.Its indication was for obesity.