Second-generation cephalosporin for oral administration with a chemical structure similar to cefaclor. At latest update no published data on excretion into breast milk were found. Cephalosporins for which data are available have shown to be excreted into milk in non-significant amount from a therapeutic point of view without reported complications in infants related to them.Cephalosporins are widely used in the Pediatric practice with a high tolerance, even in the neonatal period, so it is very unlikely that such small amounts present in the milk may be a cause of problems to the infant. Be aware of the possibility of false negative results of cultures in febrile infants whose mothers are taking antibiotics as well as the possibility of gastroenteritis (Ito 1993) by altering the intestinal flora.