Methamphetamine—meth for short—is a white, bitter powder. Sometimes it's made into a white pill or a clear or white shiny rock (called a crystal).
Meth powder can be eaten or snorted up the nose. It can also be mixed with liquid and injected into your body with a needle. Crystal meth is smoked in a small glass pipe.
Meth at first causes a rush of good feelings, but then those who use it feel edgy, overly excited, angry, or afraid. Their thoughts and actions go really fast. They might feel too hot.
Some slang names for meth are: