There's a lot of things that can cause cold sweats. It's usually when I eat something bad or I have a low-level sickness.

If you're mildly allergic to penicillin, but not enough to give you the outstanding problems of a full-on allergic reaction, that is what you could be experiencing. Though, call your doctor/dentist to be safe.

Wisdom teeth pulled? Me luv Vicodin. Not only did that stuff save my ass, but if I took 2-3 right before bed, I'd have some awesome dreams Though, I had an excuse to take 3 before bed... I had a low-level dry socket in my lower two teeth. Didn't hurt me at all during the day, but at night it drove me crazy...