Elimination, Distribution, and Clearance of Cephalosporins

Cephalosporin

Species

Route

Elimination Half-life (min)

Volume of Distribution (L/kg)

Clearance (mL/kg/min)

Cefazolin

Horses

IV

45

0.19

5.5

Dogs

IV

180

0.383

2.5

Cats

IV

71

0.29

3.3

Cefotaxime

Sheep

IV

23

0.19

8.7

Cats

IV

58

0.182

2.8

Horses

IV

36

0.29

5.2

Cefpodoxime

Dog

IV

280

0.150

0.38

Cefovecin

Dog

IV

5.5 days

0.09

Cats

IV

7.6 days

0.09

0.006

Cephalexin

Dogs

IV

117

0.37

2.83

Sheep

IV

90

0.175

2

Cefadroxil

Dogs

120

Cats

150–180

Horses

IV

48

0.46

7

Ceftiofur sodium

Cattle

IV

216

0.393

1.3

Horses

IV

6.7