Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Furosemide is dosed at 2–4 mg/kg IM q6-8h in dogs, per Keene BW, Atkins CE, Bonagura JD, et al. ACVIM consensus guidelines for the diagnosis and treatment of myxomatous mitral valve disease in dogs. J Vet Intern Med. 2019;33:1127-1140. doi:10.1111/jvim.15488 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.592 (2026-08-01).. Furosemide is used in dogs for CHF when IV not available, Oliguric renal failure (to promote urine production), Acute CHF, pulmonary edema (emergency), Cardiogenic pulmonary edema (chronic management). Routes documented in dogs: IM, IV, PO, SC. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 7 cited dose rules for Furosemide in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Lasix, Salix
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| IM | 2–4 mg/kg | q6-8h | Until IV access or oral feasible | CHF when IV not available | Strong | Keene BW, Atkins CE, Bonagura JD, et al. ACVIM consensus guidelines for the diagnosis and treatment of myxomatous mitral valve disease in dogs. J Vet Intern Med. 2019;33:1127-1140. doi:10.1111/jvim.15488 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.592 (2026-08-01). |
| IV | 2–6 mg/kg | q6-8h | 48-72 hours trial | Oliguric renal failure (to promote urine production) | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
| IV | 2–4 mg/kg | q1-4h | Emergency until stabilized | Acute CHF, pulmonary edema (emergency) | Strong | Keene BW, Atkins CE, Bonagura JD, et al. ACVIM consensus guidelines for the diagnosis and treatment of myxomatous mitral valve disease in dogs. J Vet Intern Med. 2019;33:1127-1140. doi:10.1111/jvim.15488; DeFrancesco TC. Management of cardiac emergencies in small animals. Vet Clin North Am Small Anim Pract. 2013;43(4):817-842. doi:10.1016/j.cvsm.2013.03.012 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.592 (2026-08-01). |
| PO | 2–4 mg/kg | q8-12h | Chronic; use lowest effective dose | Cardiogenic pulmonary edema (chronic management) | Strong | Chew D, Schenck P, Jaeger J. Assessment and treatment of clinical cases with elusive disorders of hypercalcemia. Presented at: ACVIM Forum; 2003. — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). |
| PO | 1–4 mg/kg | q8-12h | Chronic; lowest effective dose | CHF, pulmonary edema, ascites | Strong | Acierno MJ, Brown S, Coleman AE, et al. ACVIM consensus statement: guidelines for the identification, evaluation, and management of systemic hypertension in dogs and cats. J Vet Intern Med. 2018;32:1803-1822. doi:10.1111/jvim.15331 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). |
| PO | 1–2 mg/kg | q12h | Chronic with monitoring | Ascites (hepatic or neoplastic) | Moderate | Keene BW, Atkins CE, Bonagura JD, et al. ACVIM consensus guidelines for the diagnosis and treatment of myxomatous mitral valve disease in dogs. J Vet Intern Med. 2019;33:1127-1140. doi:10.1111/jvim.15488 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). |
| SC | 1–4 mg/kg | q8-12h | As needed | CHF maintenance when oral difficult | Moderate | Chew D, Schenck P, Jaeger J. Assessment and treatment of clinical cases with elusive disorders of hypercalcemia. Presented at: ACVIM Forum; 2003. — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.593 (2026-08-01). |
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
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 dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Furosemide dose ranges in dogs, with cited source references: IM 2–4 mg/kg q6-8h; IV 2–6 mg/kg q6-8h; IV 2–4 mg/kg q1-4h; PO 2–4 mg/kg q8-12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Furosemide in dogs: IM, IV, PO, SC.
Cited course lengths for Furosemide in dogs include: Until IV access or oral feasible; 48-72 hours trial; Emergency until stabilized; Chronic; use lowest effective dose. Duration depends on the indication — match it to the specific dose rule in the table above.
Furosemide is indicated in dogs for: CHF when IV not available, Oliguric renal failure (to promote urine production), Acute CHF, pulmonary edema (emergency), Cardiogenic pulmonary edema (chronic management), CHF, pulmonary edema, ascites, Ascites (hepatic or neoplastic), CHF maintenance when oral difficult.
These are general warnings for Furosemide across species; consult the dog 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 dogs — 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.