A beta blocker, right? Can that be taken as needed? I have taken corgard for many years for high blood pressure (and probably anxiety; not sure prozac was invented yet!). Anyway i took it every day, and some people say it slows your metabolism - like eating an extra 200 cal / day, which eventually puts weight on. So i think that would be a concern. But if it can be taken as needed, it wouldnt be such.