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  • Title: Microbiological evaluation of cefpodoxime proxetil.
    Author: Wiedemann B, Luhmer E, Zühlsdorf MT.
    Journal: Drugs; 1991; 42 Suppl 3():6-12. PubMed ID: 1726210.
    Abstract:
    Cefpodoxime, the active de-esterified molecule of the orally absorbable cephalosporin cefpodoxime proxetil, inhibits streptococci, Neisseria spp., and most Enterobacteriaceae, with MIC50 and/or MIC90 values of less than or equal to 2 mg/L; with regard to the latter family of bacteria, the MIC50 and/or MIC90 values of cefpodoxime are consistently greater than or equal to 4 mg/L for only Enterobacter cloacae, Citrobacter freundii, Serratia marcescens, and Morganella morganii. The MIC50 of cedpodoxime for coagulase-negative staphylococci is greater than 2 mg/L, while the MIC for Staphylococcus aureus strains is 4 mg/L. In comparison with other orally absorbable cephalosporins, cefpodoxime is slightly less active than cefixime, cefetamet, and cefotiam against Gram-negative bacteria, but more active than cefuroxime, cefaclor, and cefalexin. Against staphylococci, the activity of cefpodoxime is comparable to that of cefotiam and cefuroxime, and superior to that of cefaclor, while cefixime and cefetamet have insufficient activity against these species. In common with other cephalosporins, cefpodoxime has no activity against enterococci. In vitro models simulating human serum cefpodoxime concentrations demonstrate that a dosage regimen of 200mg is probably sufficient to treat most infections. However, further study is needed to clarify whether infections due to bacteria such as S. aureus, with higher cefpodoxime MICs, can be treated with this dose regimen.
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