What can I take for nausea from nervousness before public speaking?

See below... Why not try the self help tool tapping/eft. It is very powerful, empowering & helpful for public speaking anxiety... It's all over youtube... Just do a quick search "tapping and public speaking". Let us know how it works for you! wishing you well...
VRT for phobias. Phobias and anxieties respond well to Virtual Reality Therapy(VRT). VRT is exposure therapy in a safe environment. The research suggests VRT is 90% effective. Seek out a therapist who uses VRT in your area. You can find providers through www.psious.com, www.limbix.com, or www.virtuallybetter.com.