1-Methyl-4-benzylpiperazine

MBZP (1-methyl-4-benzylpiperazine) is a stimulant drug which is a derivative of benzylpiperazine. MBZP has been sold as an ingredient in legal recreational drugs known as "Party pills", initially in New Zealand and subsequently in other countries around the world.

The effects of MBZP are very similar to those of BZP, but the stimulant effect is slightly weaker and it seems to have less of a tendency to cause negative side effects such as headaches and nausea.