These are both a kind of antibiotic drug that are administered for many common infections such as infections of the sinuses, kidneys, bladder or skin as well as in incidences
of bronchitis or pneumonia. Levaquin is also used most for treating prostrate gland infections or for the treatment of people who have come in contact with anthrax virus. Many supplements can render Levaquin less effective including antacids, vitamin and mineral supplements and other chewable medications such as Carafate or Videx. It is important to wait a couple of hours between the ingestion of these supplements and medications when being treated with Levaquin, be sure to wait after you take the Levaquin the couple of hours. As far as combining the two antibiotics, it will not really matter except the Levaquin is the stronger drug that will be treating your infection if you do this. In other words the amoxicillin won't be doing much if you do this.