bacterial infection
"My dentist put me on clindamycin after I had my wisdom teeth taken out because of the infection in my gums (and I'm allergic to penicillin). I read reviews before taking this and was terrified. I've always had a weak stomach, suffering from both IBS and acid reflux. I always made sure to drink half a bottle of  water and eat part of my meal before taking this. After taking the pill, I'd drink a full bottle of water and finish my meal. Besides feeling bloated from so much water, I never had any side effects from this antibiotic. I was on 300 mg every 6 hours. No issues."