As of now there is no pharmaceutical drug for stuttering directly. There is antidepressants and other medications that are and have been used to treating stuttering. I recently read that Ecopipam is currently in the works to treat stuttering. I know they recently had a small clinical trail and had good results. Hopefully the next step is a larger clinical trail. You should read some of the work Dr. Gerald Maguire has done in the stuttering community. I found a link on some information about Ecopipam. Hopefully in the near future, there is a medication to help us be more fluent. Stay strong and positive🤘 https://www.sciencedaily.com/releases/2019/08/190828140048.htm