certain aminoacids helps a lot, l glutamine, l theanine, taurine, b complex, vitamin c, boost your immune system, also (escitalopram and clonazepam) zero cola, little alcohol, stuttering likely increases with sex, have a medical report about the food you are allergic to, and avoid it,if you have allergies likely you have leaky gut, and lastly, there are a promising clinicl trial about a pill that have good results in stuttering, its called "ECOPIPAM", google it, also google "gnptab", and "astrocytes"