Reptile · Pantherophis guttatus · typical adult weight 0.20–0.90 kg
Ivermectin is dosed at 0.2 mg/kg PO, SC, IM repeat in 14 days in corn snakes, per Flach EJ, Riley J, Mutlow AG, et al. Pentastomiasis in Bosc's monitor lizards (Varanus exanthematicus) caused by an undescribed Sambonia species. J Zoo Wildl Med. 2000;31:91-95. (co-cited: Klaphake E, Gibbons PM, Sladky KK, et al. Reptiles. In: Carpenter JW, eds. Exotic Animal Formulary, 5th ed., Elsevier, St. Louis, MO; 2018:81-166.) — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.227 (2026-08-01, PENDING REVIEW). Ivermectin is used in corn snakes for Nematodes (including lungworms), mites. Routes documented in corn snakes: PO, SC, IM. A typical adult corn snake weighs 0.20–0.90 kg. ExoticRx lists 1 cited dose rule for Ivermectin in corn snakes, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Ivomec, Heartgard
Contraindicated in Tortoise / Turtle
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO, SC, IM | 0.2 mg/kg | repeat in 14 days | Nematodes (including lungworms), mites | Weak | Flach EJ, Riley J, Mutlow AG, et al. Pentastomiasis in Bosc's monitor lizards (Varanus exanthematicus) caused by an undescribed Sambonia species. J Zoo Wildl Med. 2000;31:91-95. (co-cited: Klaphake E, Gibbons PM, Sladky KK, et al. Reptiles. In: Carpenter JW, eds. Exotic Animal Formulary, 5th ed., Elsevier, St. Louis, MO; 2018:81-166.) — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.227 (2026-08-01, PENDING REVIEW) |
Need the exact dose for your patient?
These ranges are per kg. Enter your corn snake's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Potentiates glutamate-gated chloride channels in invertebrate nerve and muscle cells, causing paralysis and death of parasites.
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 corn snakes may differ from canine / feline reference data — consult the primary citations listed with each rule.
Ivermectin dose range in corn snakes, with cited source references: PO, SC, IM 0.2 mg/kg repeat in 14 days. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Ivermectin in corn snakes: PO, SC, IM.
Ivermectin is indicated in corn snakes for: Nematodes (including lungworms), mites.
These are general warnings for Ivermectin across species; consult the corn snake dosing table above for species-specific guidance. 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.
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 corn snakes — 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.