Methamphetamine,stimulant methamphetamine, because of its raw material for the appearance of pure white crystal, crystal clear, it is drug addicts, drug traffickers are called "ice" (Ice). Because of its toxicity, people call it "ice." The drug has a short time when the small dose of exciting anti-fatigue effect, so the pills have "strong pill" said. And amphetamine (amphetamine) has its transliteration of amphetamines or amphetamines known, it is also known methamphetamine. In addition, methamphetamine is based on the chemical structure of ephedrine remodeled, so there are known to desoxyephedrine. Methamphetamine is a tablet for medicine, mostly as a powder when used as a drug, and also as a liquid and as a pill.