Mephedrone is a type of drug that some people take to make them feel good. It is made from a chemical called methylenedioxypyrovalerone (MDPV), and when taken, it can make people feel relaxed, energized, and sometimes also excited, but it can also make people feel confused, anxious and scared. Taking too much mephedrone can be dangerous and make people very sick and even lead to death. It is important to note that mephedrone is an illegal drug and should never be used.