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Street name

A2, Blast, BZP, Cosmic Kelly, ESP, Happy Pills, Legal E, Legal X, Nemesis, Party Pills, Pep, Rapture, Silver Bullet, Smiley’s, The Good Stuff.

General Info

Piperazines are a broad class of chemical compounds which mimic the effects of Ecstasy. They are stimulants. They were originally produced as a legal alternative to MDMA (Ecstasy) but have since been classified as Class C drugs and have been found as a cutting agent in some Ecstasy pills. Dose for dose they are not as potent as Ecstasy. Effects can last for 6 – 8 hours. The best known piperazines are BZP (Benzylpiperazine), TFMPP, DBZP and mCPP.


  • The user experiences feelings of  arousal, euphoria, alertness,  being full of energy and wellbeing
  • Use of this drug can cause agitation, vomiting, stomach pain, fits, irregular heart rhythms, diarrhoea, allergic reactions and fever
  • Decreased appetite and sleeplessness. 


  • Many users frequently suffer a reaction similar to a hangover for up to 24 hours
  • Piperazines are stimulants and the risk factor increases when they are taken by someone with high blood pressure or a heart condition. Often people do not know they have a pre existing heart condition
  • Perfectly healthy young people can have a fit or heart attack after taking stimulant drugs
  • In rare cases users may suffer from ‘serotonin syndrome’. It can cause high blood pressure and may be fatal
  • Mixing Piperazines with Alcohol is particularly dangerous as due to their interaction they can cause loss of control, making use much riskier. 


Class C