Patients will be recruited by any of numerous strategies including word of mouth, self-referral, local fliers, newspapers, and radio advertisements. This study will be conducted open label with no random assignment or stratification. Patients may be accepted for detoxification or longer-term treatment (6 to 12 months of buprenorphine/naloxone therapy). Patients under the age of 21 will initially be admitted for detoxification; longer treatment of these patients will be based on physician judgement of the necessary of continued treatment. Patients will be inducted directly into buprenorphine/naloxone 4:1 combination tablets. Patients treated in private practice will be asked to sign a treatment contract which will delineate the terms and conditions of treatment.