Ceftanyx 1gm Injection is an antibiotic medicine that kills the infection-causing bacteria in your body. It is often injected by a doctor or a nurse either into a vein or a muscle. This medicine is used to treat many different types of infections such as those of the brain (meningitis), lungs (pneumonia), ear, abdomen, urinary tract, bones and joints, skin, blood, and heart. This medicine usually makes you feel better within a few days. Follow your doctor's instructions carefully to get maximum benefit.