The present invention relates to effervescent formulations comprising ceftibuten and/or its pharmaceutically acceptable salts, hydrates, solvates, esters, amorphous and crystal forms and/or a combination thereof.Linvention concerne des formulations effervescentes comprenant du ceftibutène et/ou ses sels pharmaceutiquement acceptables, hydrates, solvates, esters, formes amorphes et cristallines et/ou une combinaison de ces éléments.