LYOPHILIZED PREPARATION

摘要

PROBLEM TO BE SOLVED: To obtain a lyophilized preparation having excellent stability of an amphoteric cephem-based antibiotic. SOLUTION: The lyophilized preparation comprises the amphoteric cephem-based antibiotic and a halide ion selected from a chloride ion, a bromide ion and an iodide ion. The method for producing the lyophilized preparation comprises formulating the amphoteric cephem-based antibiotic with the halide ion and production by a lyophilization method. The method for stabilizing the lyophilized preparation comprises formulating the amphoteric cephem-based antibiotic with the halide ion. COPYRIGHT: (C)2004,JPO&NCIPI