I took bupropion for 8-9 months, I found I stuttered allot more. Typically my stutter is moderate, but for a period of time it was severe. I cut back my doses and quit cold turkey after a 2 week period or half doses and my stutter improved (still moderate). The medication gave me allot of brain fog, and possibly that’s due to the increase in stuttering. Just my experience though! Perhaps yours will be different, good luck!