[Sensitivity of bacteria inducing urinary infections to 3 drugs (amoxicillin, ampicillin and cephalexin) and clinical efficacy of amoxicillin (author's transl)].

MIC of amoxicillin (AMPC), ampicillin (ABPC) and cephalexin (CEX) against bacteria detected from the patients suffering from urinary infections was determined and the clinical efficacy of AMPC was examined. As the result of determining MIC of AMPC against the detected Escherichia coli, 85.4% showed the value of less than 6.25 mcg/ml. AMPC and ABPC seem to be well correlated with each other regarding MIC, and AMPC showed 1 approximately to 2 stage lower concentration than CEX. In connection to clinical efficacy of AMPC, the oral administration at a daily dose of 750 mg gave the effectiveness rate of 92.5%. Few side effects were caused by administering AMPC and this is an excellent drug for healing acute simple urinary infections.