Generic Suboxone contains of buprenorphine and 0.5 mg of naloxone. It's used similarly to the 8 mg version, primarily for treating opioid dependence. The lower dosage can be part of a tapering plan or for patients who require less medication. Generic Suboxone contains of buprenorphine and 0.5 mg of naloxone. It's used similarly to the 8 mg version, primarily for treating opioid dependence. The lower dosage can be part of a tapering plan or for patients who require less medication.