Hi Margaret, I'm surprised your doctor would prescribe you an antibiotic if you're allergic to antibiotics. Some people have used a mouth wash of water with a few drop of Oil of Oregano for pain relief of an abscessed tooth. Most teeth abscesses are caused by an infection due to tooth decay, gum disease or some type of trauma to the tooth. You should consult with your dentist for the best plan to treat your tooth condition before the infection spreads.

I've read on other sites that as the oregano oil works it sometimes produces flu or cold like symptoms and even a rash because your body is releasing the toxins. It says to decrease the dosage you're taking and drink 8 glasses of water daily to flush the toxins then go back to your usual dosage.