@thyroidchor27 I don't believe so, since it's not available OTC, but I don't think anti-anxiety meds actually treat the root cause of stuttering, it's more like opening a window when the oven is heating up the room and it's 70degrees outside rather than turning off the oven.
I've heard people on reddit talk about the potential of dopamine agonist drugs, I've never tried them, but I've tried seroquel a few times as I've had access to those, and it made it harder to speak in general as I was in a cloud, literal lobotomy.
Adderall in high dosages effectively cures stuttering for the duration of the high, and lessens it during the come down, but during the following days (so if Monday you take 90mgs of addy, then Monday you won't stutter at all, and Tuesday you will stutter less than normal, but then Wednesday through Friday I would stutter so badly I wouldn't speak, since I wouldn't even be able to actually speak much at all.
(The reddit is mostly teenage boys who fear they'll never get laid - as a very handsome 6'3" man stuttering didn't really affect this too much for me tbh - it likely helped me by keeping me from sperging out too hard about esoteric subjects and scaring normie women off when I was younger)