1) Are use of piperazines neurotoxic? Do they affect short term memory? 2) I am of the understanding that instead of depleting serotonin they work on the receptors making you more sensitive to natural levels. If this is true, would mixing piperazine and mdma give an incredible rush? Would this be dangerous? 3) In your opinion, how long would you give it before piperazines and similar chemicals will be prohibited in the UK?