Actually, yes. It improved my confidence and made me more extroverted and outgoing. It lifted my mood to the point where I felt happy all the time, though a bit weird. At that time, I was also drinking alcohol, and when I got drunk, I would talk and overshare with strangers at the pub. Eventually I stopped because I was being reckless. I can’t say for sure whether it helped my stutter since it was 6 years ago and I don’t fully remember, but what I am sure of is that when I stopped, my stutter came back worse.