Clindamycin
"I was honestly terrified when i read these reviews after being prescribed this after a root canal treatment. I was in a lot of pain during the procedure even though thoroughly frozen, dentist said she saw an infection and prescribed this in case. I was nervous buying it, and overly cautious taking them at the right time, with food, 2 glasses of water. I felt really tired and had a sore throat just after the first 6-8 dosages, and then the pain was gone (after months of it) and no other side effects, so i guess i've hit my stride with it. I'm halfway through now and am less stringent with eating each time, going well so far."