Cefdinir is a broad-spectrum, third-generation cephalosporin resistant to many β-lactamase enzymes. It is structurally similar to Cefixime and was patented in 1979 by Fujisawa Pharmaceutical. Cefdinir is an inhibitor of neutrophil myeloperoxidases and can also interact with the dipeptide transporters PEPT1 and PEPT2.