Azithromycin
"My wife came down with a bad case of bronchitis New Years Eve day. I took her to urgent care that evening. She did not drink that night and started taking the azithromycin 
the following morning. 2 hours later she got bad stomach cramps along with vomiting and diarrhea. We stopped the medication. We think it may have had something to do with her long time health condition of diverticulitis. This might be something you may want to mention if you have this condition before taking it."