However, the non-medical use of prescription drugs is a serious public health concern. Nonmedical use of prescription drugs like opioids, central nervous system (CNS) depressants, and stimulants can lead to abuse and addiction, characterized by compulsive drug seeking and use.
Source: U.S. Department of Health and Human Services. National Institute on Drug Abuse. (2002, September 24). NIDA InfoFacts: Prescription Drugs and Pain MedicationsWashington, DC: U.S. Government Printing Office.