You can treat bacterial infections in your body with Cephadex 500 Capsules. An antibiotic called Cephadex 500 Capsules acts by destroying the bacteria that causes infections in your body. It works well for bacterial infections of the skin, soft tissues, urinary tract, throat, and ears. You should continue taking this medication as directed even after you feel better, even though it normally takes a few days. If you stop it too soon, the illness can return and become more difficult to cure.