The Office of National Drug Control Policy provided this information on some of the more commonly abused drugs. Methamphetamine, a derivative of amphetamine, is a powerful stimulant that affects the central nervous system. It can be smoked, snorted, orally ingested or injected. It comes in many different forms that may be identified by color, ranging from white to brown. Using steroids promotes muscle growth and increases lean body mass.
Users say it produces positive feelings, empathy and extreme relaxation and eliminates anxiety.
It suppresses the need to eat, drink or sleep. It is taken in pill form. Rohypnol is a relaxant 10 times as potent as Valium. Outside the United States, it is legally manufactured and is available by prescription for short-term treatment of severe sleeping disorders. Drug abusers take Rohypnol with alcohol or marijuana to enhance intoxication.