The experience of many people who claim that a pill for stuttering exists has mostly been negative. Why? Because really strong pills have side effects on the heart and liver. The second point is the development of dependence and a decrease in effect due to habituation to the drug. I don't know a single person who got a permanent effect, it always decreased. I used to lead a group of stutterers in my country, where there were 700 people. But at the same time, I believe that the brain can restore neural connections under the influence of drugs. They will play the role of a builder, the second role will be on speaking without hesitation in technique.