What meds do they give for dental infections

Antibiotics

Antibiotics, then once the infection clears they'll work on your tooth.

my dentist usually prescribes me penicillin

Yeah as already mentioned it's standard to get a course of antibiotics to clear the infection. Then once you've taken them and it's cleared up they'll fix whatever it is that give you the infection in the first place.
乂ᴼ ₒ ᴼ乂

The deputy dentist uses a purple feather to treat all of your showerstall problems.

Why are you trying to find meds or do you have a current infection?

Antibiotics . And you’ll probably need a root canal afterwards.

anti biotics and Motrin for pain.

clove oil

Antibiotics