Amphibian · Anaxyrus houstonensis · typical adult weight 0.03–0.09 kg
Ivermectin is dosed at 10 mg/l immersion immersion/bath — see duration in houston toads, per Ramsey I, ed. BSAVA Small Animal Formulary, 10th ed. Part B: Exotic Pets. Gloucester: British Small Animal Veterinary Association; 2023. p.184. — LOCATOR CONVENTION 2026-08-07: the bare 'p.184' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.170; verified by finding the drug named there. If you are holding the book, turn to p.170. — SOURCE EDITION: BSAVA Small Animal Formulary, Part B — Exotic Pets — ISBN 9781910443712, https://openlibrary.org/isbn/9781910443712. Ivermectin (Antiparasitic) has cited veterinary dosing for houston toads. Routes documented in houston toads: immersion, p.o., topically. A typical adult houston toad weighs 0.03–0.09 kg. ExoticRx lists 3 cited dose rules for Ivermectin in houston toads, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Ivomec, Heartgard
Contraindicated in Tortoise / Turtle
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| immersion | 10 mg/l | immersion/bath — see duration | 60 MINUTES - printed explicitly: '10 mg/l for 60 minute bath, repeat in 14 days.' This is a timed bath, not a continuous tank treatment: the animal is placed in the 10 mg/l solution for one hour and then returned to clean water. | — | Moderate | Ramsey I, ed. BSAVA Small Animal Formulary, 10th ed. Part B: Exotic Pets. Gloucester: British Small Animal Veterinary Association; 2023. p.184. — LOCATOR CONVENTION 2026-08-07: the bare 'p.184' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.170; verified by finding the drug named there. If you are holding the book, turn to p.170. — SOURCE EDITION: BSAVA Small Animal Formulary, Part B — Exotic Pets — ISBN 9781910443712, https://openlibrary.org/isbn/9781910443712 |
| p.o. | 0.2–0.4 mg/kg | q14d | — | — | Moderate | Ramsey I, ed. BSAVA Small Animal Formulary, 10th ed. Part B: Exotic Pets. Gloucester: British Small Animal Veterinary Association; 2023. p.184. — LOCATOR CONVENTION 2026-08-07: the bare 'p.184' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.170; verified by finding the drug named there. If you are holding the book, turn to p.170. — SOURCE EDITION: BSAVA Small Animal Formulary, Part B — Exotic Pets — ISBN 9781910443712, |
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 |
|---|---|---|---|
| 0.2–0.4 | PO | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.184 | 0.2-0.4 mg/kg p.o. q14d or 2 mg/kg topically, repeat in 14-21 days or 10 mg/l for 60 minute bath, repea |
| 2 | TOPICAL | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.184 | 0.2-0.4 mg/kg p.o. q14d or 2 mg/kg topically, repeat in 14-21 days or 10 mg/l for 60 minute bath, repeat in 14 days |
| 0.2–0.4 | IM | Carpenter's Exotic Animal Formulary, 6th edTable 3.3 | - 0.2-0.4 mg/kg IM once |
Need the exact dose for your patient?
These ranges are per kg. Enter your houston toad'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 houston toads may differ from canine / feline reference data — consult the primary citations listed with each rule.
Ivermectin dose ranges in houston toads, with cited source references: immersion 10 mg/l immersion/bath — see duration; p.o. 0.2–0.4 mg/kg q14d; topically 2 mg/kg repeat in 14-21 days. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Ivermectin in houston toads: immersion, p.o., topically.
Cited course lengths for Ivermectin in houston toads include: 60 MINUTES - printed explicitly: '10 mg/l for 60 minute bath, repeat in 14 days.' This is a timed bath, not a continuous tank treatment: the animal is placed in the 10 mg/l solution for one hour and then returned to clean water.. Duration depends on the indication — match it to the specific dose rule in the table above.
These are general warnings for Ivermectin across species; consult the houston toad 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 houston toads — 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.
| topically | 2 mg/kg | repeat in 14-21 days | — | — | Moderate | Ramsey I, ed. BSAVA Small Animal Formulary, 10th ed. Part B: Exotic Pets. Gloucester: British Small Animal Veterinary Association; 2023. p.184. — LOCATOR CONVENTION 2026-08-07: the bare 'p.184' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.170; verified by finding the drug named there. If you are holding the book, turn to p.170. — SOURCE EDITION: BSAVA Small Animal Formulary, Part B — Exotic Pets — ISBN 9781910443712, https://openlibrary.org/isbn/9781910443712 |
| 2 |
| — |
| Carpenter's Exotic Animal Formulary, 6th edTable 3.3 |
| 2 mg/kg topically |
| 0.2–0.4 | PO | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | 0.2-0.4 mg/kg PO, SC, repeat q14d as needed52 Nematodes, including lungworms; mites |
| Dose (mg/l) | Route | Source | As printed |
|---|---|---|---|
| 10 | IMMERSION | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.184 | /kg p.o. q14d or 2 mg/kg topically, repeat in 14-21 days or 10 mg/l for 60 minute bath, repeat in 14 days |
| 10 | IMMERSION | Carpenter's Exotic Animal Formulary, 6th edTable 3.3 | 10 mg/L × 60 min bath, repeat q14d prn,91 |
| 10 | — | Mader's Reptile and Amphibian Medicine and Surgery, 3rd edTable 128.2 | 10 mg/L × 60 min bath, repeat q14d prn52 Mites |
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.