Been taking penicillin for two days for an infected tooth. tooth still hurting really bad, how long should it be before i feel relief?

Talk to your doctor: I would recommend you speak with your doctor. Different types on antibiotics work in different ways for different levels of infection. Penicillin may not be the optimal antibiotic in your case and they may be able to give you a more effective alternative. However, it can take a few days before an antibiotic really takes and you feel the effects also, but i would talk to the doctor to be safe.

You might not: Depending upon the severity and cause of the infection, antibiotics may not provide much relief. They simply help reduce the severity of the infection, they do not treat or correct the cause . You might need either root canal treatment or extraction to solve the problem. Good luck.

Depends: The tooth may respond well to penicillin, and perhaps it may deemed to be a less effective medication. As to pain relief, it takes time for the antibiotic to work, at least 48 hours for significant help. There are factors that make this harder/easier: the density of the bone, the drainage or lack thereof of inflammatory fluids, vascularization of the area (blood brings the medicine), so it depends.

See your Endodontist: Some people are under the assumption that they must wait for an antibiotic to kick in before they have a root canal or extraction. Especially for root canals, don't wait. The sooner it is treated the sooner you will feel better! remember, antibiotics don't heal abscesses. They just help reduce the swelling and pain but the cause of the problem must be identified and treated!

Call your dentist: Typically it can take 24 hours for penicillin to take effect. If you have not noticed any improvement you should call your dentist. The antibiotic may not be effective against the strain on bacteria causing your infection. It may need to be changed. Remember that the antibiotic will not cure an abcessed tooth. You still need treatment.Your treatment can be started now.