Great post .. we need to make sure that Thiamine can cross the blood brain barrier. Thiamine can increase acetylcholine which is said to be lowered in people who stutter. Thiamine is also said to aid in a rare basal ganglia disease. The basal ganglia has been proven to be altered with hyper levels of dopamine seen in ppl who stutter. I Keep me updated on your thiamine journey. Feel free to send a chat to me. Best wishes. Stay up.