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).
Smoking meth is the most common way it is used. Some mix the powder with liquid and inject it (shoot up) into their bodies with a needle. Others take the meth powder by mouth or snort it up the nose.
Meth causes a rush of good feelings at first. People who take it can then feel nervous, overly excited, angry, or afraid. Their thoughts and actions go really fast. They might feel too hot.
Some slang names for meth are:
NEXT: Signs of Meth Use