I went to the ER last night for a dental infection. The swelling was creeping up quickly and annoying, so I poked it myself with a toothpick first to start some draining. I went in and she gave PenVK 500mg tid x7days. I have been so extremely tired! This isn't a typical thing that happens with me taking antibiotics--it's never happened before. I slept in all morning and had to force myself to get up in the early afternoon. I park somewhere I don't really get disturbed much, so it was no problem. I might still be sleeping if I actually had a home, so being homeless can be good in a way? Has anyone else found that penicillin or antibiotics make them tired?