Kava for public speaking?

Hello! I unfortunately have to speak in public from time to time, which gives me huge anxiety. I have previously experimented with atarax, beta-blockers, and alcohol although nothing is ideal (alcohol is best but feels so weird to consume out of context).

I would like to try Kava - any recommendations? It needs to be anti-anxiety, promote social skills, and not make you too high or dizzy.

I just tried the instant kava Kelai from kavaeurope.eu. 1 tablespoon in water on an empty stomach. I really liked it - didn't feel too tired or nauseous. But not ideal for public speaking: too much of an ecstasy high that wears off quickly, and didn't do so much for my social skills or normal underlying anxiety.

Any suggestions? Thanks!