Glad the PVK is working, I've never seen problems with it. On the other hand, Clindamycin is not as broad spectrum either and is usually only used in folks with a PCN allergy.
Good luck with the extraction. I always like for my patients to have at LEAST 48 hours on antibiotics before I remove...
Pen Vee K is standard for tooth infections, but if it's in the "dangerous triangle" around your eyes or nose, then it is considered SERIOUS and should be treated as such.
If I were you I would take TWO tabs every 6 hours for the first two days. You may get diarrhea but at least it will be...