About Methamphetamine Methamphetamine is a stimulant drug chemically related to amphetamine but with stronger effects on the central nervous system. Methamphetamine is used in pill form, or in powdered form by snorting or injecting. Methamphetamine use also can cause irreversible damage to blood vessels in the brain, producing strokes. Marijuana and alcohol are commonly listed as additional drugs of abuse among methamphetamine treatment admissions.
Researchers continue to study the long-term effects of methamphetamine use.