Yes, disappointingly. I’d heard first hand accounts that it makes the stutter get better. But alas, no. Only thing that works for me (unintentionally) is to stay up late / get very poor sleep. Then the next day I feel super tired BUT my fluency is really good. Next day fluency is crash and burn worse. Side note, antidepressants seem to help with anxiety. And as we know anxiety goes hand in hand with stuttering. I am not advocating for anyone to go on antidepressants.