BETHESDA, Md. — The National Institute on Drug Abuse last week released the 2012 Monitoring the Future survey, finding that 5.6% of high school seniors abused over-the-counter cough and cold medicines containing dextromethorphan, a rate that has held relatively steady over the past five years. Abuse of DXM products was reported to be 3% among eighth graders and 4.7% among tenth graders, bringing the overall average to under 5%.
