It is unclear how buprenorphine may affect fertility and sperm count. Some small studies suggest this may be true, but more information is needed on the subject.  ‍It is still a subject worth discussing with a doctor if you have concerns about fertility, but there doesn’t appear to be any strong evidence buprenorphine negatively impacts fertility and should not be discontinued for this reason. If anything, active opioid use is likely to have equal if not worse impacts on fertility, thus being stable on Suboxone therapy is likely to only help, not harm, one’s fertility.