Methamphetamine is a very addictive stimulant drug. It can be smoked, injected, inhaled or taken by mouth. It has many street names, such as speed, meth and chalk. Methamphetamine hydrochloride, the crystal form inhaled by smoking, is referred to as ice, crystal, glass and tina.
Methamphetamine affects the brain and can create feelings of pleasure, increase energy and elevate mood. Abusers may become addicted quickly, needing higher doses more often. Adverse health effects include irregular heartbeat, increased blood pressure and a variety of psychological problems. Long-term effects may include severe behavioral health disorders, memory loss and severe dental problems.
Information provided by the National Institutes of Health