Alcohol did and it was one factor that led me down a bad path. I’m sober now. The reduced stuttering was nice but I’d often end up drinking too much and slurring anyway. When I quit I had horrible withdrawal symptoms and my speech was extra f**ked up for awhile. None of it was worth it. I strongly advise you all take caution if you’re using recreational drugs for your stutter. It could be more difficult to realize you’re in denial of a problem if you started using to help your stutter.