Ashwagandha has really helped me a lot, can’t speak enough praise about it. It’s not a cure but you should see a distinctive shift. Just be careful on the dosage. Studies have looked at the blood of stutterers and found Zinc to be unusually low on average, so it makes sense to supplement. Vitamin B1 + Magnesium is a good less potent alternative to Ashwagandha or can be used in tandem.