I know you are not looking for mom talk, but that is honestly the best option.

Ask yourself, is your social anxiety so crippling that you can't proceed without the use of a drug? If it is not, then you should not be flirting with the idea of taking a drug for a long period of time. Once that reliance sets in, it is extremely hard to come back from.

FWIW I love drugs and I have been a recreational user for a long time, but in this case, I think you just need practice being in social gatherings. Even if you do stutter, the fact that you are actively trying to improve yourself shows a great deal of confidence. And that confidence will only get stronger as time goes one.