Can a vitamin help children and adults who stutter to talk fluently?
Watch my other stuttering therapy videos:
https://www.youtube.com/channel/UClMdPZCKon-rkmfy9lY0qTQ
Buy my book Making Stuttering Therapy Work on Amazon: https://www.amazon.com/Making-Stuttering-Therapy-Thomas-David-ebook/dp/B0DFZY6QD9/
Buy delayed auditory feedback (DAF) anti-stuttering devices on my website: https://casafuturatech.com/
