Re: abcessed tooth and amoxicillin 875 mg
I had an abscessed tooth and was started on antibiotics. 3 days later I was in so much pain that I had an emergency root canal. I continued taking the remainder of the antibiotics but I believe the infection was so severe that the only way to quickly get rid of the infection was to have the root canal.
If your in an excessive amount of pain talk to your doctor and see if you should change antibiotics or get the root canal sooner.