Hello
I was one of the people that suggested beta blockers on the 'nerves' thread. I certainly don't feel doped up when I take 20 mgs. I can tell my heart is pounding LESS than when I don't take them, but it is still faster than normal (after the performance, when I am calm, but still have the bb in my system, I've noticed that it is slower than normal). What I have noticed, with the bb is that I don't have:
Sweaty hands
shaking leg
shaking hands
racing mind
perfect playing
I still make mistakes, but I can deal with them and collect myself and move on.
I actually enjoy the whole performing experience more, for the most part, and am more with the moment. They might make me just a little sleepy, but the adrenalin is still high enough to keep me alert.
I'm not sure if I make fewer mistakes, those just happen, it seems. In my last performance, I just started playing too fast, which was a common pre-bb thing. So it really doesn't take care of all the problems, just some. But they help me get into my own personal little space.
I would definitely try it first when you don't have to perform, just to see how they make you feel.
My teacher thought I should be able to play without them, which I did up until a year ago. However, he took them, so what does that say!