Are you concerned about getting an infection if you don't take the Antibiotics ? Try rinsing your mouth with tea tree oil as much as necessary while you're fasting. It's strongly anti-bacterial. I think it's usually in the first-aid/dental care section of the health food store. Or maybe try Colloidal Silver . You might even be able to get away with swallowing the Colloidal Silver during your fast, considering that it has no caloric nutrition. And that stuff practically makes pharmaceutical Antibiotics obsolete. Good luck and have fun!