The use of benzodiazepines among people who use illicit drugs is complex as reasons for use are not always straightforward and use does not necessarily infer abuse. On the other hand, higher dosing than prescribed is common among drug users (Nielsen et al. 2008) and use in combination with drugs such as heroin and alcohol is likely to promote adverse effects.
Source: McIlwraith, F., Hickey, S., and Alati, R. (April 2012). Benzodiazepine update: alprazolam and other benzodiazepine use among people who inject drugs. IDRS Drug Trends Bulletin April 2012, Sydney: National Drug and Alcohol Research Centre, The University of New South Wales.