Cefadroxil is an antibiotic of the cephalosporin class. It is related to the penicillin drugs in how it kills bacteria, but cephalosporins have a much broader range of activity against bacteria than penicillins. Cefadroxil will prevent the bacteria from forming an adequate and protective cell wall. This results in instability and subsequent death of the bacteria.

Cefadroxil is a prescription drug and can only be obtained from a veterinarian or by prescription from a veterinarian. Cefadroxil is a semi-synthetic oral antibiotic in the cephalosporin family of drugs. The cephalosporin family includes cephalexin, cefaclor, cefuroxime, cefpodoxime, cefixime, and many injectable antibiotics. Cefadroxil is active against many bacteria, including: Staphylococcus. aureus, Streptococcus pneumoniae, Streptococcus pyogenes (the cause of strep throat), Moraxella catarrhalis, E. coli, Klebsiella, and Proteus mirabilis.

Cefadroxil is a first-generation cephalosporin antibiotic. It is bactericidal, and acts by inhibiting synthesis of the bacterial cell wall. Bacterial cell walls are held rigid and protected against osmotic rupture by peptidoglycan. Cefadroxil inhibits the final cross linking stage of peptidoglycan production by binding to and inactivating transpeptidase, which is a penicillin binding protein on the inner surface of the bacterial cell membrane. Cefadroxil is most active against Gram-positive cocci, and has moderate activity against Gram-negative bacilli. Sensitive Gram-positive cocci include penicillinase and non-penicillinase producing staphylococci. Some Gram-positive anaerobes are sensitive. Gram-negative bacteria include strains of Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, Salmonella, and Shigella spp. It is active against Haemophilus influenzae.

Cefadroxil is indicated in the treatment of mild to moderate infections of the respiratory tract, urinary tract, skin and skin structures and bone caused by susceptible organisms and as an alternative to penicillins in patients with a history of hypersensitivity reactions. Cefadroxil is used to treat many different types of bacterial infections such as bronchitis, tonsillitis, ear infections, skin infections, and urinary tract infections. Cefadroxil may also be used for purposes other than those listed in this medication guide. Cefadroxil is effective only against infections caused by bacteria; it is ineffective against those caused by viruses, fungi, or other microorganisms.