Effectiveness of Buprenorphine/Naloxone in Reducing Intravenous Buprenorphine Misuse in France ("RIME")

Patients who admit to using buprenorphine by the intravenous route will be randomized to either Subutex or Suboxone and be followed up for 3 months to determine if there is less injection with Suboxone than with Subutex based primarily on patient diaries. Patients randomized to Suboxone may continue to receive the product for a further 9 months at their request and will be monitored at 3 month intervals. Patients will receive a payment for the inconvenience of keeping a daily diary and to cover their travel expenses.