Ivermectin for Chicken
Livestock · Gallus gallus domesticus · typical adult weight 0.50–5.00 kg
Ivermectin is used in chicken for Nematodes, external parasites. Routes documented in chicken: PO. A typical adult chicken weighs 0.50–5.00 kg. ExoticRx lists 1 cited dose rule for Ivermectin in chicken, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Ivomec, Heartgard
Dose ranges
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.2–0.4 mg/kg | Once; repeat in 10-14 days | 1-2 doses | Nematodes, external parasites | Weak | FARAD Withdrawal Guidelines |
Need the exact dose for your patient?
These ranges are per kg. Enter your chicken's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Mechanism of action
Potentiates glutamate-gated chloride channels in invertebrate nerve and muscle cells, causing paralysis and death of parasites.
Side effects & warnings
TOXIC to MDR1-mutant dogs (Collies, Shelties, Aussies) at elevated doses. DO NOT use in chelonians (turtles/tortoises). Narrow safety margin in some species. Test MDR1 status before use in herding breeds.
Species-specific contraindications and adverse-reaction reports for chicken may differ from canine / feline reference data — consult the primary citations listed with each rule.
Other Antiparasitic drugs with chicken dosing
Ivermectin dosing in other species
Why a species-specific page? Ivermectin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in chicken — 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.