Equine · Equus caballus · typical adult weight 350.00–700.00 kg
Furosemide is dosed at 1–2 mg/kg IV q6-12h in horses, per Mogg T. Equine cardiac disease: clinical pharmacology and therapeutics. Vet Clin North Am Equine Pract. 1999;15:523-534. doi:10.1016/s0749-0739(17)30130-x; Redpath A, Bowen M. Cardiac therapeutics in horses. Vet Clin North Am Equine Pract. 2019;35(1):217-241. doi:10.1016/j.cveq.2018.11.004 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). — Plumb's 10th ed (held) printed p.566, Furosemide monograph spanning p.563-567; page located 2026-08-05 from the book's own running heads, and carries this exact dose under the matching species heading. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Furosemide is used in horses for Adjunctive therapy for congestive heart failure (control of edema), EIPH, pulmonary edema. Routes documented in horses: IV. A typical adult horse weighs 350.00–700.00 kg. ExoticRx lists 2 cited dose rules for Furosemide in horses, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Lasix, Salix
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| IV | 1–2 mg/kg | q6-12h | — | Adjunctive therapy for congestive heart failure (control of edema) | Strong | Mogg T. Equine cardiac disease: clinical pharmacology and therapeutics. Vet Clin North Am Equine Pract. 1999;15:523-534. doi:10.1016/s0749-0739(17)30130-x; Redpath A, Bowen M. Cardiac therapeutics in horses. Vet Clin North Am Equine Pract. 2019;35(1):217-241. doi:10.1016/j.cveq.2018.11.004 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). — Plumb's 10th ed (held) printed p.566, Furosemide monograph spanning p.563-567; page located 2026-08-05 from the book's own running heads, and carries this exact dose under the matching species heading. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
| IV | 0.5–1 mg/kg | q12-24h or 4h pre-race | As needed | EIPH, pulmonary edema | Strong | DISAL - Furosemide Injection [US Product Label for Dogs, Horses]. Boehringer Ingelheim Animal Health USA Inc.; 2019. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=62c22d28-4efb-409d-8da6-113f2802347c — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.594 (2026-08-01). — Plumb's 10th ed (held) printed p.563, Furosemide monograph spanning p.563-567; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 1 | IM | Papich Saunders Handbook of Veterinary Drugs, 4th edp.376 | • 1 mg/kg q8h or 250-500 mg/horse at 6-8 hour intervals IM or IV. |
| 0.12 | IV | Papich Saunders Handbook of Veterinary Drugs, 4th edp.376 | • CRI: 0.12 mg/kg IV followed by 0.12 mg/kg/hr IV. |
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.
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Inhibits sodium-potassium-chloride cotransporter (NKCC2) in the thick ascending limb of the loop of Henle, producing potent diuresis.
Monitor electrolytes (hypokalemia, hyponatremia). Ototoxicity at high IV doses. Dehydration risk. May worsen renal azotemia. Adjust dose based on clinical response.
Species-specific contraindications and adverse-reaction reports for horses may differ from canine / feline reference data — consult the primary citations listed with each rule.
Furosemide dose ranges in horses, with cited source references: IV 1–2 mg/kg q6-12h; IV 0.5–1 mg/kg q12-24h or 4h pre-race. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Furosemide in horses: IV.
Cited course lengths for Furosemide in horses include: As needed. Duration depends on the indication — match it to the specific dose rule in the table above.
Furosemide is indicated in horses for: Adjunctive therapy for congestive heart failure (control of edema), EIPH, pulmonary edema.
These are general warnings for Furosemide across species; consult the horse dosing table above for species-specific guidance. Monitor electrolytes (hypokalemia, hyponatremia). Ototoxicity at high IV doses. Dehydration risk. May worsen renal azotemia. Adjust dose based on clinical response.
Why a species-specific page? Furosemide pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in horses — 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.