Propranolol works well for controlling physical symptoms of anxiety. Sweaty hands, fumbly voice, rapid heart rate, etc..
Benzos act on GABA and actually slow your thoughts down to ease the mental aspect.
In conjunction these two are very synergistic. If I am going to be giving a speech or presentation there's nothing quite like an adderall, klonopin, and propranolol combo..
I don't advise that though as they are all pretty addictive and if you fall into the habit of relying on them that's hard to come back from. I limit my use to a few times a month, to keep tolerance low and stockpile my prescriptions. lol