Livestock · Gallus gallus domesticus · typical adult weight 0.50–5.00 kg
Narasin is dosed at 54–72 ppm PO continuous in feed in chickens, per US FDA. Monteban 45 (narasin) Type A Medicated Article, NADA 118-980, Elanco. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=b2c16014-6212-41e0-9461-70b597de0a13 - broiler chickens only; Type C feed 54-90 g/ton (60-99 ppm) continuously as sole ration; fatal to horses and adult turkeys.. Narasin is used in chickens for Coccidiosis prevention. Routes documented in chickens: PO. A typical adult chicken weighs 0.50–5.00 kg. ExoticRx lists 1 cited dose rule for Narasin in chickens, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Monteban
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 54–72 ppm | continuous in feed | Coccidiosis prevention | Strong | US FDA. Monteban 45 (narasin) Type A Medicated Article, NADA 118-980, Elanco. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=b2c16014-6212-41e0-9461-70b597de0a13 - broiler chickens only; Type C feed 54-90 g/ton (60-99 ppm) continuously as sole ration; fatal to horses and adult turkeys. |
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Polyether ionophore antibiotic that disrupts cation transport across coccidia cell membranes. Also has some growth-promoting effects via modification of rumen fermentation.
TOXIC to horses. For use in broiler chickens only (not layers or turkeys). Do not combine with tiamulin. Do not feed to other species.
Species-specific contraindications and adverse-reaction reports for chickens may differ from canine / feline reference data — consult the primary citations listed with each rule.
Narasin dose range in chickens, with cited source references: PO 54–72 ppm continuous in feed. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Narasin in chickens: PO.
Narasin is indicated in chickens for: Coccidiosis prevention.
These are general warnings for Narasin across species; consult the chicken dosing table above for species-specific guidance. TOXIC to horses. For use in broiler chickens only (not layers or turkeys). Do not combine with tiamulin. Do not feed to other species.
Why a species-specific page? Narasin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in chickens — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.