Cefazolin vs penicillin. Treatment of uncomplicated pneumococcal pneumonia.

Cefazolin sodium, 500 mg intramuscularly twice daily, was compared with penicillin G procaine, 600,000 units intramuscularly twice daily, in the treatment of 82 patients with pneumococcal pneumonia. Patients were randomly assigned except when there was a history of penicillin allergy. The patients received treatment for five days or until they were afebrile for 48 hours. No patients experienced side effects or allergic reactions. All patients recovered satisfactorily without relapses. Cefazolin in the previously described dosage is as effective as penicillin in the treatment of pneumococcal pneumonia.