bacterial infection
"I was prescribed clindamycin 4 days ago for a gum/nerve infection due to an absessed tooth. I started to get pretty nervous about the heartburn I was experiencing. Worst of my life! Water is key, and so far so good. My swelling and pain went away after 2 days. I also noticed taking it every 6 hours EXACTLY (or however long you're prescribed to) helps a bunch too. Oh, and water, not laying down for about 30 minutes after, and more water."