I am so glad that I looked at this site I was prescribed Biaxin XL for Bronchitis and only took it two days when I started experiencing stomache cramps, restlessness, and profuse sweating. I too had no interest in food and got really down in the dumps attitude wise. I have never had any reaction to any medication and so when I called my doctor after seeing this online he said that it was highly unlikley that it was the Biaxin causing this side effect and that he assumed my Bronchitis was just getting worse-I DO NOT THINK SO!!! I am now on a Z-Pack and am feeling much better but will now write this med down in all my medical documents that I am highly allergic to it since my own doctor didn't beleive that I could have those side effects. Thanks to everyone who posted.