I’ve been taking it on/off for ~4 years now. Like you, my therapist also thought my stutter was caused by anxiety. It worked wonderfully while I was on it, gained so much confidence bc I wasn’t blocking 24/7. This last year, I’m seeing some differences and we’re thinking ive built up a tolerance to my meds. So now I’m on the hunt for a psychiatrist to see if I should get on something new.