Suboxone can make patients feel sleepy at first. However, this is less common in opioid experienced patients — patients who have been using opioids prior.
Side effects usually improve in the first few days as your body gets used to the medication. This effect can sometimes be exacerbated if you are taking other medications that also cause sleepiness or sedation. For this reason, we always start Suboxone at a low dose to avoid sedation and sleepiness.
Talk to your doctor if you feel persistently sleepy while on Suboxone, and your dose can be adjusted.