Also a severe stutterer with blocks. I’ve followed the Thiamine protocol for years. I stopped for several months recently and my stuttering became worse than ever. Now I’m back on it and my stuttering has drastically improved. I take 100mg of b-1 with 100mg chelated magnesium (doctors best brand). As a ceo, how do you deal with answering the phone with blocks? I struggle so hard with it. It’s like my vocal chords freeze up as soon as the phone rings. Any advice?