Have you done ERP exposure response prevention for ocd or stuttering? The goal of ERP is habituation (also called desensitization), building tolerance and not perceiving **stuttering, feared letters and situations** as dangerous anymore. Medication to reduce anxiety is counter-productive towards desensitization, because it's about evoking anxiety in order to build tolerance against **stuttering, feared letters and situations (aka anticipatory anxiety)**. If medication lowers your anxiety then your mind-body cannot do its job to adjust when you are exposing yourself to this anxiety. In other words, medication works temporarily and it will limit lasting effects like outgrowing your stuttering