From Cow
Erythromycin, indicated for Shipping fever in cattle

Erythromycin is a broad-spectrum macrolide antibiotic that is effective against many Gram-positive and Gram-negative bacteria.

It has proven efficacy against:

In bovine medicine, erythromycin is indicated for infections associated with pneumonia, foot rot, mastitis, puerperal metritis and abomasal displacement.

In cattle with abomasal displacement, erythromycin also has prokinetic effects and may be more effective at increasing abomasal motility and emptying[1].

Recommended dose in cattle is 8 – 15 mg/kg given intramuscularly once or twice daily.


  1. Constable PD et al (2012) Evidence-based use of prokinetic drugs for abomasal disorders in cattle. Vet Clin North Am Food Anim Pract 28(1):51-70