The first comprehensive overview of how and why heroin is prescribed in the UK. Prescribing heroin is the first overview of how and why heroin is prescribed in the UK. It brings together research evidence from the UK and elsewhere to provide a comprehensive review of the benefits and drawbacks of heroin prescription. Currently only a small number of UK doctors prescribe heroin. The government is planning a cautious and modest expansion of this treatment. This study considers whether heroin prescription is effective in the short and the long term.