bacterial infection
"Taking Clindamycin 300mg three times a day for 3 weeks due to Cellulitis. I'm about to end my third week and for the past 4-5 days I've had horrible heartburn, feels like something is stuck in your throat  and horrible acid feeling in my stomach. The medication has worked wonderfully.  I just hate these side effects. The Dr recommended I ate before taking it to prevent these side effects but even though I eat and take the pill afterward I still feel the heartburn starting in a matter of minutes right after taking the pills. If you're on this get something strong for these effects cause they are a nightmare."