mCPP’s full name is m-chlorophenylpiperazine. It was a research chemical initially synthesised in the late 1970s as a potential anti-depressant. The drug has never been licenced for medical use, but is known to metabolite some anti-depressants. Recreational use was first reported across Europe and many other countries in the mid-2000s due to an eruption of the substance being sold as a ‘designer drug’ that mimicked the effects of MDMA. mCPP is another stimulant that is also found regularly in ecstasy pills.