I have never tried LSD, I have taken a very small dose of Psilocybin mushrooms. Not enough to have a great effect, I did feel slightly calmer though. ​ Look into Paul Stamets, he talks about Psilocybin mushrooms curing his stammer. This is what got me into trying them. I don't know if there is much evidence, to back his claims up... but I am also interested in trying it more. https://www.reddit.com/r/Stutter/comments/7bmdpy/paul\_stamets\_mycologist\_talking\_about\_stuttering/