Which third generation cephalosporin is NOT typically administered orally?

Ceftazidime is the correct choice because it is primarily administered by injection and is not available in an oral formulation, which distinguishes it from the other options listed. Third generation cephalosporins, such as cefdinir, cefpodoxime, and cefixime, are often formulated for oral use, allowing for convenient administration in outpatient settings for the treatment of various infections. Ceftazidime, on the other hand, is typically used in a hospital setting for serious infections and must be given intravenously or intramuscularly, making it unsuitable for oral administration. This reflects its specific role in treating infections that require higher blood levels of the antibiotic, which can only be achieved through parenteral routes.