Methamphetamine

Methamphetamine (USAN) ( /ˌmɛθæmˈfɛtəmiːn/), also known as metamfetamine (INN), meth, ice, crystal, glass, tik, N-methylamphetamine, methylamphetamine, and desoxyephedrine, is a psychostimulant of the phenethylamine and amphetamine class of psychoactive drugs.