Mephedrone may be banned, chief drug adviser indicates. bbcnews. March 23, 2010. The government’s chief drugs adviser has strongly indicated the Advisory Council on the Misuse of Drugs (ACMD) will recommend mephedrone be banned.Professor Les Iversen said he expected the panel would make a recommendation to the home secretary next Monday.He said he believed mephedrone was "harmful" and hinted that it should be categorised as a Class B drug.His evidence to an MPs’ committee comes as the deaths of a number of young people have been linked to the drug.The drug is known by various names, including "M-Cat", "MC", "mieow", "meow", "4MMC", or simply plant fertiliser.Concern over its effects has grown after two friends, Louis Wainwright, 18, and Nicholas Smith, 19, died in Scunthorpe, Lincolnshire, last week after taking mephedrone. [ See ]