I was on Doxy for about a week, and everything seemed ok. I was getting a little sick of the uncomfortable feeling from the prostatitis, but everything seemed ok. During that time, I started taking Celexa for obsessive tendencies and general anxiety. That seemed not to work at all because of side effects, and I quit after one dose. However, as the days wore on, the symptoms of nausea and diarrhea set in, and that triggered major, debilitating panic attacks. I called a pharmacist thinking it was Celexa, and she said it was the Doxy, though she said the panic was something else. I quit it, but is am in a tailspin. The panic, which triggered after the nausea, is still around and seemingly worse. I don't even know how I made it through work today. I am really hoping I am reacting to the things others are experiencing on this site because this is as scary as anything I have ever encountered.