A suspension formulation for administration to an animal, the suspension formulation including: at least one cephalosporin antibiotic or a pharmaceutically similar salt thereof an oil and a glycerol acetate solvent.一種施予動物之懸浮液配方,該懸浮液配方包括:至少一頭孢菌素類抗生素(cephalosporin antibiotic)或其藥學上相似之鹽類;一油類;以及一甘油乙酸酯(glycerol acetate)溶劑。