I have pretty intense performance anxiety & thus far in my life, have just dealt with it on my own. Next month, I have to speak in front of a large live audience and cameras. A friend told me about beta blockers & I really want to try them out. My question: I do use a sleep aid (zopiclone) once in a while, especially the night before "big" days. Is it o.k. to use propranolol if I've taken a sleeping pill the night before? Does anyone have experience with this or know of contraindications?