Methamphetamine, or "meth," is a dangerous, sometimes lethal and unpredictable drug. Meth is also known as speed, ice, and crystal. Like cocaine, meth is a potent central nervous system stimulant. Meth represents the fastest growing drug threat in America today.

Meth can be smoked, snorted, injected, or taken orally, and its appearance varies depending on how it is used. Typically, it is a white, odorless, bitter-tasting powder that easily dissolves in water. Another common form of the drug is crystal meth, or "ice," named for its appearance (that of clear, large chunky crystals resembling rock candy). Crystal meth is smoked in a manner similar to crack cocaine and about 10 to 15 "hits" can be obtained from a single gram of the substance. Users have referred to smoking ice as a "cool" smoke, while the smoking of crack is a "hot" smoke. The euphoric effect of smoking ice lasts longer than that of smoking crack.