FDA -- Barr Laboratories, Inc. is initiating a voluntary recall of Dextroamphetamine Saccharate, Amphetamine Aspartate, Dextroamphetamine Sulfate and Amphetamine Sulfate (Mixed Salts of a Single Entity Amphetamine Product) 20mg Tablets, 100 count bottles, lot number 311756. The product identified is being recalled because the affected lot may contain some tablets exceeding weight requirements which may lead to super-potent tablets.