Clarithromycin
"I was prescribed clarithromycin and Prednisone for my sinus infection and bronchitis. I was told by my pharmacist to take the clarithromycin with food. Then she told me to eat something like Activa yogurt about 2 hours after taking the clarithromycin because clarithromycin will tend to kill the good bacteria in your stomach which is what brings on the diarrhea many complain of. The activa then helps rebuild the good bacteria in your stomach. On my third day and feeling a little better, and never any diarrhea. I attribute the good experience to good pharmacist suggestions.I make sure to eat food and the Activa yogurt 2 hours later, and no side effects yet and I am feeling on the mend,"