<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a tooth abscess and before the dentist will go in to fix it he put me on amoxicillin. However, I have been taking this medication for nearly two weeks now and the infection seems to be getting worse. my friend suggested I ask about Rocephin for this type of infection. Would Rocephin work for my abscess?  <response>: Hello:Welcome to Chat Doctor. Prolonged intake of antibiotics is not appreciated. Rocephin is not necessary as it acts on the same organisms as penicillin. I suggest you to take amoxicillin and metronidazole for 5 days. Also take Neutron B plus before food for 5 days as you are already on antibiotics for long. Take a OTC painkiller if necessary. Get the treatment done as early as possible. Regards. 