<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The Prescription Drug Marketing Act (PDMA) of 1987 (P.L. 100 - 293, 102 Stat. 95) is a law of the United States federal government . It establishes legal safeguards for prescription drug distribution to ensure safe and effective pharmaceuticals . It's designed to discourage the sale of counterfeit, adulterated, misbranded, subpotent, and expired prescription drugs . It was passed in response to the development of a wholesale sub-market (known as the "diversion market") for prescription drugs . </P> <P> The PDMA was modified by the Prescription Drug Amendments of 1992 (P.L. 102 - 353, 106 Stat. 941) on August 26, 1992 . </P>

The act that restricted the sale of drugs by requiring a prescription was the