Please consult your physician before taking any medication. (Spanish name, Ceclor 12H) Cephalosporins (sef-a-loe-SPOR-ins) are used in the treatment of infections caused by bacteria. They work by killing bacteria or preventing their growth. Cephalosporins are used to treat infections in many different parts of the body. They are sometimes given with other antibiotics. Some cephalosporins given by injection are also used to prevent infections before, during, and after surgery. However, cephalosporins will not work for colds, flu, or other virus infections. Ceclor may also be used for purposes other than those listed in this medication guide.