Believing, as I do, that stuttering has a physical cause, namely incorrect breathing, maybe caused by trying to pull one's stomach in at a cost of preventing one's diaphragm from pushing the breath out through the vocal chords; I fail to see how psychedelics would resolve that. ​ The path to freedom is accepting that you have the mechanics of talking all wrong, then investigating how to speak and breath (diaphragmatically) ; and practice practice practice