Monensin

CAS: 17090-79-8

API Pharmacopoeia: Chinese Veterinary Pharmacopoeia

Monensin is an ionophore antibiotic widely used in cattle and poultry feed. It helps prevent coccidiosis and improves feed efficiency by altering rumen fermentation and targeting gram-positive bacteria and protozoa. It’s not absorbed into the bloodstream, making it effective locally in the gut. However, it’s highly toxic to horses, so cross-species use must be avoided.