High Quality Content by WIKIPEDIA articles! Amphetamine (USAN, abbreviated from alpha-methylphenethylamine) or amfetamine (INN) is a psychostimulant drug of the phenethylamine class which produces increased wakefulness and focus in association withMoreHigh Quality Content by WIKIPEDIA articles! Amphetamine (USAN, abbreviated from alpha-methylphenethylamine) or amfetamine (INN) is a psychostimulant drug of the phenethylamine class which produces increased wakefulness and focus in association with decreased fatigue and appetite.