Big differences between Crohns and stuttering. One is a medical condition. Speech therapy is the first, best treatment for stuttering. You wouldn't use a pill to learn a new language. You're not going to learn fluency by taking a pill. If a medication is used in conjunction with therapy, and it helps you while you work towards fluency, that's great. But medication alone for fluency is a pipe dream. Aiming for 50% improvement is shooting low when it comes to stuttering. Many of us can achieve fluency.