Sinus infection from possible infected tooth what meds should i be on?

Depends on infection: Depends on the cause. A real sinus infection would require one type of antibiotic; a tooth-related infection could require one of several different antibiotics depending on what is causing the infection. Best treatment is to have a professional evaluate the cause and prescribe the right medicaiton.

Antibiotic: Assuming you indeed acquired a bacterial infection from an infected tooth, you should be diagnosed officially by a health care provider and get treated with an antibiotic for oral/sinus infections. Best wishes.

First things first: Tooth infection or not? This needs to be determined by your dentist. Is the tooth restorable (meaning needs root canal therapy) or does it need to be extracted? This needs to be determined first before antibiotics are prescribed. Your dentist or physician will tell you which antibiotic is correct for your problem, once that is determined.

Antibiotics: There are several choices which can be made. If the tooth has a peridontal abscess that has extended into the maxillary sinus it may be possible to culture this and make an intelligent informed decision. If not, since the organisms are likely to be normal mouth flora then Amoxicillin or an oral cephalosporin should be ok, but there are other possibilities. The tooth needs dental care.

Antibiotics: And you should see a dentist to have he tooth treated or removed other wise the infection will continue or get worse.