Mephedrone is extremely addictive, which is not surprising because it's not meant for human consumption. People taking this drug experience very low periods when the only thing they can think about is getting their next fix. It's known for causing breathing difficulties, nose bleeds and even strong paranoia.
I've read some of the forums where drug users were discussing their personal experiences in taking meow meow. One person said he'd been awake for 56 hours. Many said they started as a joke and end up being so hooked, they could not stop even though they tried. Recently I read an item reporting news of a young man who hallucinated so terribly, he pulled off his own scrotum after taking this drug. At the time of writing, M-cat (meow meow) can be passed through customs without any problems as it's legal 'plant food.' It's shipped and delivered as a normal, average package with no questions asked.
Mephedrone, which can be snorted, licked or swallowed, was never actually intended as plant food. It has always been manufactured as a drug. Having been on the streets of Britain for only two years, it's clear that it has spread to dangerous levels because it's already the fourth most used drug here after cannabis, cocaine and ecstasy.
From midnight tonight meow meow is no longer legal. It's to be reclassified as a B drug which means anyone found in possession could have a maximum sentence of five years. So many young people have already died. Hopefully this new law will put a lid on this madness.