A generic drug, as defined by FDA, is a
-drug identical to a brand name drug in dosage form,
-safety, strength, route of administration, quality, performance characteristics, and
-intended use.
So Generic drugs are copies of innovator or brand-name prescription drugs and Generic drug developers do not have to repeat these studies, resulting in much less expensive development programs and more affordable access to treatments for many patients and consumers. Although, the generic medicines industry is moving beyond making copies to developing patent-expired products, with new formulations, dosages and delivery methods