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Monensin for Cattle

Monensin is used in cattle for Coccidiosis prevention, feed efficiency, growth promotion, TOXIC — listed. Routes documented in cattle: PO. ExoticRx tracks Monensin dosing for cattle from primary veterinary literature; sign in to view the full rule set. Verify against current literature before clinical use.

Trade names: Rumensin, Coban

Dose rules — sign in to view

Cited dose rules for Monensin in cattle are available with a free ExoticRx account. Each row carries the route, dose range, frequency, indication, evidence level, and primary-source citation.

Sources include: FDA NADA Label; Plumb's Veterinary Drug Handbook, 9th Ed; Toxicology of Domestic Animals; FDA openFDA Adverse Event Database; Plumb's Veterinary Drug Handbook, 9th Ed; Toxicology references; FDA openFDA Adverse Event Database
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Mechanism of action

Polyether ionophore that transports cations across cell membranes, disrupting ion gradients in coccidia and gram-positive bacteria. In ruminants, improves feed efficiency by altering rumen microbial populations.

Side effects & warnings

HIGHLY TOXIC TO DOGS, HORSES, AND OTHER EQUIDS — even small amounts can be fatal. Cardiac and skeletal muscle necrosis. NO antidote. Keep all livestock feed containing monensin away from horses and dogs.

Species-specific contraindications and adverse-reaction reports for cattle may differ from canine / feline reference data — consult the primary citations listed with each rule.

Calculate dose for this cattleSee all species for MonensinSee all drugs for Cattle

Why a species-specific page? Monensin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cattle — the rules above are the citations specific to this species, not generic recommendations.

Sourced from primary literature; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.