Mephedrone is a synthetic stimulant of the cathinone class, commonly known for its psychoactive effects similar to those of amphetamines and MDMA. Often found in a white powder or crystal form, it is typically ingested through snorting, oral consumption, or injection. Mephedrone gained popularity in the late 2000s as a recreational drug but has been associated with various health risks and is banned in many countries due to its potential for abuse and harmful side effects.