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By Mayo Clinic staffPrescription drug abuse is the use of prescription drugs — most commonly painkillers, sedatives and stimulants — in ways not intended by the prescribing doctor. The definition for prescription drug abuse includes everything from taking a friend's prescription painkiller for your backache to snorting ground-up pills to get high.
According to a 2007 survey conducted for the National Institute on Drug Abuse, prescription drug abuse occurs in more than 15 percent of U.S. high school seniors. The types of drugs most popular for prescription drug abuse are codeine-based painkillers such as oxycodone (OxyContin) and those containing hydrocodone (Vicodin).