Use of alcohol or selected other drugs in combination with nonmedical use of adhd medications in the past year. Percentages of nonmedical users aged 18 to 49 in the U.S. civilian noninstitutionalized population who used any of the listed drugs at the same time or within a couple of hours of using ADHD medications nonmedically in the past year (including error bars). Estimates are not mutually exclusive. Bars represent 95% confidence intervals. ADHD = attention deficit/hyperactivity disorder.* Examples given included painkillers, tranquilizers, or sleeping pills. Use in combination (either at the same time or within a few hours) with ADHD medications could include legitimate prescription use or nonmedical use of other medications.