Contrary to the belief that mephedrone is less harmful than drugs like cocaine, many users showed signs of dependence Three in 10 clubbers who take the drug mephedrone exhibit symptoms associated with addiction, a study has found. Many users of the banned substance, sometimes called "meow meow", had several signs of dependence, including withdrawal effects, failed attempts to give up, and taking larger and larger doses. UK Home Office figures published in July found mephedrone ranks joint second with cocaine behind cannabis in popularity among 16- to 24-year-olds, with 4.4% having taken...