Abstract In a double-blind, randomized, controlled trial, the efficacy of intravenous amoxicillin-clavulanic acid (Augmentin®) in preventing post-cesarean section infections was studied in 35 healthy women undergoing elective lower segment cesarean section. Intravenous Augmentin or a placebo was administered before the operation. Both groups were comparable in terms of patient characteristics and operation variables. The group receiving Augmentin had no postoperative febrile or infectious morbidity. A larger proportion of patients in this group spent fewer days in hospital than those in the placebo group.