Opioid addicted buprenorphine injectors: drug use during and after 12-weeks of buprenorphine-naloxone or methadone in the Republic of Georgia.

•Assessed the prevalence of drug use in a 12week study with Suboxone or methadone.•70% of patients reported injecting more than one drug past 30days at baseline.•85% of patients completed the 12-week treatment and 82.5% the 20-week follow-up.•Both treatments were highly effective in reducing opioid and non-opioid drug use.