Ice Ice is methamphetamine that has been crystallized so it can be smoked.
Ice is a stimulant. It stimulates the central nervous system, resulting in increased activity and alertness. Methamphetamine can interfere with vision, judgment, coordination, and reflexes, which may lead to automobile and other machinery accidents. Effects of the drug may last from 2 hours to 20 hours depending on how much is smoked. Behavioral effects include violence, hallucinations, depression and psychosis.