Before taking amoxicillin, tell your doctor if you are using any of the following drugs:

    *

      methotrexate (Rheumatrex, Trexall);
    *

      probenecid (Benemid);
    *

      a sulfa drug (such as Bactrim or Septra);
    *

      an antibiotic such as azithromycin (Zithromax), clarithromycin (Biaxin), erythromycin (E.E.S., E-Mycin, Ery-Tab, Erythrocin), or telithromycin (Ketek); or
    *

      a tetracycline antibiotic such as demeclocycline (Declomycin), doxycycline (Adoxa, Doryx, Oracea, Vibramycin), minocycline (Dynacin, Minocin, Solodyn, Vectrin), or tetracycline (Brodspec, Panmycin, Sumycin, Tetracap).

This list is not complete and there may be other drugs that can interact with amoxicillin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.