Hey man! I think adderall is really bad for stuttering. I have adhd, but i dont take adderall. From my experience, i start to stutter a lot more when i come down off my adderall. Adderall is just like meth. There are other therapies that you can do for adhd. As a stutter, its important for us to stay calm and talk slow. Adderall has terrible long term effects like depression and anxiety which we most of the stutters already experience. Building dependence on any drug is bad for stutters. I used to take a lot of adderall in colleges, and i would always feel like shit and stutter a lot more the day after i took adderall. Lastly, it uses your seratonin which we need the most