Torsemide
Also known as: Demadex, Torem, Unat
**Torsemide** is a powerful "water pill" (diuretic) used to help your pet's body eliminate excess fluid, usually due to severe heart disease. * **Bathroom Habits**: Your pet will urinate much more frequently and in larger amounts. Ensure they always have access to fresh drinking water to prevent dehydration. * **Timing**: Because it causes increased urination, try not to give the dose right before bedtime unless instructed by your veterinarian. * **What to Watch For**: Contact your vet immediately if you notice signs of dehydration or electrolyte imbalance, such as: * Excessive thirst or lethargy * Weakness or stumbling * Vomiting or loss of appetite * Restlessness or a rapid heart rate > **Note**: Never change the dose or stop this medication without consulting your veterinarian, as fluid can rapidly build up in the lungs.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Adjunctive treatment of refractory congestive heart failure
- Congestive heart failure
- Adjunctive treatment of refractory congestive heart failure
- Congestive heart failure
How it is given
Possible side effects
- Fluid and electrolyte abnormalities (hyponatremia, hypocalcemia, hypokalemia, hypomagnesemia)
- Prerenal azotemia (secondary to dehydration)
- Gastrointestinal disturbances
- Hematologic effects (anemia, leukopenia)
- Weakness
- Restlessness
- Ototoxicity (rare, associated with rapid IV administration)
Cautions & contraindications
- Known hypersensitivity to torsemide or other sulfonylureas
- Anuric patients
- Use cautiously in patients with significant **hepatic dysfunction**, **hyperuricemia** (may increase serum uric acid), or **diabetes mellitus** (may increase serum glucose). > **Note**: IV injection should be administered slowly over a period of 2 minutes to minimize the risk of ototoxicity.
Drug interactions
- ACE Inhibitors (e.g., enalapril, benazepril): Increased risks for hypotension, particularly in patients who are volume or sodium depleted secondary to diuretics
- Aminoglycosides (gentamicin, amikacin, etc.): May increase the ototoxic or nephrotoxic risks of aminoglycosides
- Amphotericin B: May increase the risk for nephrotoxicity development
- Digoxin: Can increase the area under the curve of torsemide by 50%; torsemide-induced hypokalemia may increase the potential for digoxin toxicity
- Lithium: Torsemide may reduce lithium clearance
- NSAIDs: Some NSAIDs may reduce the natriuretic effects of torsemide
- Probenecid: Can reduce the diuretic efficacy of torsemide
- Salicylates: Torsemide can reduce the excretion of salicylates
Frequently asked questions
What is Torsemide used for in pets?
**Torsemide** is a powerful "water pill" (diuretic) used to help your pet's body eliminate excess fluid, usually due to severe heart disease. * **Bathroom Habits**: Your pet will urinate much more frequently and in larger amounts. Ensure they always have access to fresh drinking water to prevent dehydration. * **Timing**: Because it causes increased urination, try not to give the dose right before bedtime unless instructed by your veterinarian. * **What to Watch For**: Contact your vet immediately if you notice signs of dehydration or electrolyte imbalance, such as: * Excessive thirst or lethargy * Weakness or stumbling * Vomiting or loss of appetite * Restlessness or a rapid heart rate > **Note**: Never change the dose or stop this medication without consulting your veterinarian, as fluid can rapidly build up in the lungs.
Is Torsemide safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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