Drug users 'turning to diazepam' BBC, 3 September 2008 07:50 UK
http://news.bbc.co.uk/1/hi/uk/7594463.stm
"Diazepam, formerly known as Valium, is prescribed for insomnia and anxiety
An increasing number of drug users are turning to the tranquilliser diazepam, a drugs information charity claims. DrugScope says the popularity of diazepam - formerly known as Valium - is rising among drug users in 15 out of 20 UK towns and cities it surveyed. Diazepam is being used as a heroin substitute, and often taken alongside alcohol and methadone to ease the comedown from crack cocaine, it said."