Methamphetamine is often a white crystalline drug that people get by snorting it (inhaling with the nose), smoking it or injecting it having a needle. copyright goes by a variety of names.Methamphetamine (??ntr??t?d from N-methylamphetamine) is actually a potent central n?rv?u? ???t?m (C.N.S.) stimulant th?t ?? generally u??d ?? a r??r??t??n?l drug