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Cefadroxil is an acid-stable and semi-synthetic oral cephalosporin. It is rapidly absorbed after oral administration. Urine concentration of this antibiotic, following a 1 gm dose, is maintained well above the MIC of susceptible urinary pathogens for 20 to 22 hours.
Cefadroxil inhibits bacterial cell wall synthesis by binding to 1 or more of the penicillin-binding proteins (PBPs) which in turn inhibit the final transpeptidation step of peptidoglycan synthesis in bacterial cell walls, thus inhibiting cell wall biosynthesis and arresting cell wall assembly resulting in bacterial cell death.