what is cefazolin used to treat
Ancef Uses Ancef Â® (cefazolin) is a prescription antibiotic typically used in hospitals or other similar settings. It is given intravenously (by IV) or by intramuscular (IM) injection. Ancef is approved for treating the following types of infections: 1  Respiratory tract infections, such as pneumonia or strep throat. 2  Urinary tract infections (UTIs, such as a bladder infection or kidney infection). 3  Biliary tract infections, such as a gallbladder infection. 4  Bone and joint infections. 5  Genital infections.