Reptile · Pantherophis guttatus · typical adult weight 0.20–0.90 kg
Fenbendazole is dosed at 25 mg/kg PO q14d in corn snakes, per MattCL, Nagamori Y, Stayton E, et al. Kalicephalus hookworm infection in four corn snakes (Pantherophis guttatus). J Exot Pet Med. 2020;34:62-66. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.225 doi:10.1053/j.jepm.2020.04.008 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.4 (Antiparasitic Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929. Fenbendazole is used in corn snakes for Hookworm (Kalicephalus sp.). Routes documented in corn snakes: PO. A typical adult corn snake weighs 0.20–0.90 kg. ExoticRx lists 1 cited dose rule for Fenbendazole in corn snakes, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Panacur
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 25 mg/kg | q14d | Hookworm (Kalicephalus sp.) | Moderate | MattCL, Nagamori Y, Stayton E, et al. Kalicephalus hookworm infection in four corn snakes (Pantherophis guttatus). J Exot Pet Med. 2020;34:62-66. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.225 doi:10.1053/j.jepm.2020.04.008 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.4 (Antiparasitic Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 25 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 4.4 | 25 mg/kg PO q14d |
| 25–100 | PO | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 127.4 | 25-100 mg/kg PO q14d for up to 4 treatments37,143,166 All species/nematodes |
| 30–50 | — | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | 30-50 mg/kg PO52 Gastrointestinal nematodes |
| 50 | PO |
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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.
Binds to beta-tubulin, inhibiting microtubule polymerization in parasites. Disrupts energy metabolism and cell division.
Very wide safety margin. Rarely causes vomiting or diarrhea. Safe in pregnant animals at standard doses. Must be given for multiple consecutive days for efficacy.
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.
Fenbendazole dose range in corn snakes, with cited source references: PO 25 mg/kg q14d. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Fenbendazole in corn snakes: PO.
Fenbendazole is indicated in corn snakes for: Hookworm (Kalicephalus sp.).
These are general warnings for Fenbendazole across species; consult the corn snake dosing table above for species-specific guidance. Very wide safety margin. Rarely causes vomiting or diarrhea. Safe in pregnant animals at standard doses. Must be given for multiple consecutive days for efficacy.
Why a species-specific page? Fenbendazole 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.
| Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 |
| 50 mg/kg PO q24h × 3-5 days, repeat in 14-21 days52 Gastrointestinal nematodes |
| 50–100 | — | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | 50-100 mg/kg PO36 repeat in 2-3 wk prn Most species/gastrointestinal nematodes |
| 100 | PO | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | (F) 100 mg/kg PO, repeat in 10-14 days + (M) 10 mg/k PO q24h for 5 days52 g Concurrent gastrointestinal nematodes and protozoa |
| 0.2 | PO | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | (F) 100 mg/kg PO on day 1, then (I) 0.2 mg/kg PO on days 2,1152 Gastrointestinal nematodes |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.