The no-drug-mentioning rule is getting out of hand and is not progressive. If someone is hell-bent on finding drugs that purportedly helps treat stuttering (whether proven or not), they will do so anyway through an intense web search. Just say what it is, repeating the big disclaimer that your experience is purely anecdotal, said drug may do no nothing at all, or even have nothing but undesirable side effects, and the reader is encouraged to do their own investigation. If enough anecdotal examples are provided, it may end up triggering a proper clinical trial and end up benefiting everyone. Other subreddits like r/Nootropics allow such posts with the same expectations that you will do your due diligence based on someone’s experience. If you plan on abusing unknown drugs, no one can help you but yourself.