Methamphetamine is a stimulant drug usually used as a white, bitter-tasting powder or a pill. Crystal methamphetamine is a form of the drug that looks like glass fragments or shiny, bluish-white rocks. It is chemically similar to amphetamine (a drug used to treat attention-deficit/hyperactivity disorder [ADHD] and narcolepsy, a sleep disorder). Learn about the health effects of methamphetamine and read the DrugFacts.
- MEDLINEplus Health Information on Substance Use Disorders (National Library of Medicine, NIH)
- Healthfinder.gov (U.S. Department of Health and Human Services)
Clinical trials are research studies in human volunteers conducted to answer specific health questions. Learn about the NIDA-sponsored clinical trials available to you