I've wondered the same thing. I've stuttered my entire life, at this point I've just accepted that it's never really going to get better. I was diagnosed with Bipolar disorder when I was 17 and I've been taking a cocktail of various medications ever since. Right now I'm on Lamictal, Lexapro, and Seroquel. I've been taking Seroquel nightly for the past 3 years, because my stuttering has always been bad I can't really tell if the meds affect my speech or not. Did the stuttering get worse on a specific medication or with antipsychotics in general?