Mephedrone is sometimes called Meow or Miow. Its chemical name is 4-methylmethcathinone (4-MMC). its a cross between cocaine and ecstacy, comes in powder form and is about £20 a gram. I know people who take this regularly and they say that it is very very strong indeed. Some places online sell it as Plant feeder. In the papers today - tragicvally - a young girl died after taking it alonong with Ketamine. Its use is all over the Uk, from Manchester all teh way down to London. It came from an Israeli company selling it a legal high in 2008, however has been made illegal there since then. Not something I would even consider taking as nothing is known about the side effects, long term effects, what happens when mixing it with Alcohol, other drugs etc.