Cefadroxil is a semi synthetic cephalosporin. Bactericidal action of cefadroxil is due to inhibition of cell wall synthesis. Cefadroxil has been shown to be active against the following organisms both in vitro and in clinical infections

• Beta-hemolytic streptococci
• Staphylococci, including penicillinase-producing strains
• treptococcus (Diplococcus) pneumoniae
• Escherichia coli
• Proteus mirabilis
• Klebsiella species
• oraxella (Branhamella) catarrhalis