Welcome to PC!
Prozac was my first line of defense when I was diagnosed with Generalized Anxiety Disorder; it worked great for about a month up until the panic attacks started; granted the panic were probably work related. He upped my dose to 40 which just made me more depressed than ever. Granted this was before any sort of Antipsychotic. I haven't gone back to any sort of depression medication, Seroquel keeps that at bay. I wish you luck with the Prozac.