Suboxone belongs to the ADHD medicine category. Suboxone is unique because it is similar to a painkiller but it does not contain higher side effects like painkiller. The lowest typical dose for Suboxone is Suboxone 2 mg. The ratio between buprenorphine and naloxone is 4:1. Common side effects of Suboxone include headache, diarrhea, constipation, and nausea.