How much did propanolol help You With your stuterring?

How much did propanolol help You With your stuterring? How much did propranolol help you with your stuttering? On the other hand, I have hope that it will work for me because a good amount of stuttering that I have is due to anticipatory anxiety and also when I confess that I have a stutter, my stuttering goes down and finally a few months ago I got on several buses to say that I have a stutter and after For a few hours I had almost perfect fluency with my friends (I haven't told them that I stutter) but on the one hand I'm afraid that it won't work because some also talk about dopamine and I take risperidone and sertraline for my anxiety and well, it works a lot for me but It hasn't helped my speech :(