I have Barrett s Esophagus, I ve been taking Nexium for years. My last prescription was changed to a generic brand called Esomeprazole Mag Dr. I had a serious bacteria infection last year for 6 months, 3 months to recover when I took Cipro to clear the bacteria. About 7 weeks ago, about when I started taking this new generic brand, I developed heavy breathing problems, no energy and not feeling good. I went to the doctor, to the hospital, to a infection specialist and I am now taking an antibiotic called Azithromycin, 500mg. This after taking Cipro again. Does not seem to be a bacteria. Could this new generic medication be causing my problems and should I call my Gastro. on Monday?