{"id":627471,"date":"2024-03-25T14:15:09","date_gmt":"2024-03-25T18:15:09","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=627471"},"modified":"2026-04-01T16:56:15","modified_gmt":"2026-04-01T20:56:15","slug":"furosemide-for-dogs","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/furosemide-for-dogs\/","title":{"rendered":"Furosemide for dogs: Dosage and safety"},"content":{"rendered":"

Furosemide<\/span><\/a>, known by the brands Lasix, Salis, and Disal, is commonly given to dogs to treat <\/span>heart failure<\/span><\/a>, kidney failure, fluid buildup in the lungs, and electrolyte abnormalities, according to Plumb\u2019s. As a <\/span>diuretic<\/span><\/a>, it increases the body\u2019s elimination of water through the urine. It\u2019s the most commonly used diuretic in veterinary medicine. <\/span>Loop diuretics<\/span><\/a> like furosemide are potent and fast-acting. Additionally, loop diuretics can also be used in high doses, so they\u2019re good in crisis situations.<\/span><\/p>\n\t\t

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\n\t\t\t\t\tFurosemide 20 mg (30 Tablets)\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t23666 - Hampton, VA\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t
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\n\t\t\t\t\t$2.80\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\ti<\/span>\n\t\t\t\t\tPrice with signup<\/a>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t
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\n\t\t\t\t\t$2.80\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\ti<\/span>\n\t\t\t\t\tPrice with signup<\/a>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t
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What is furosemide used for in dogs?<\/span><\/h2>\n

Furosemide<\/span><\/a> is a diuretic used to decrease water volume in dogs with heart failure, fluid buildup in the lungs (pulmonary edema), fluid accumulation (edema) due to other causes, kidney failure, and high blood electrolyte levels.<\/span><\/p>\n

Congestive heart failure<\/span><\/h3>\n

Heart failure occurs when the heart doesn\u2019t pump out enough blood to the rest of the body. One consequence is the buildup of fluids in certain areas, such as the lungs, chest, abdomen (ascites), and other body parts. Furosemide increases the dog\u2019s urine output, helping drain excess fluid from areas where it doesn\u2019t belong.\u00a0<\/span><\/p>\n

Pulmonary edema<\/span><\/h3>\n

Pulmonary edema is fluid buildup in the lungs that makes breathing more difficult. While it has many causes, furosemide is the drug of choice for eliminating this excess fluid.\u00a0<\/span><\/p>\n

Edema<\/span><\/h3>\n

Furosemide can treat fluid buildup elsewhere in the body, but other diuretics are usually the drugs of choice in most cases. However, furosemide is a first-line treatment when fluid buildup is due to a specific type of kidney disease affecting a part of the kidney\u2019s filtration mechanism. In those cases, furosemide can increase urine output to compensate for the kidney\u2019s reduced output.<\/span><\/p>\n

Kidney failure<\/span><\/h3>\n

Kidney failure describes any condition in which the kidneys are not eliminating enough water, electrolytes, and wastes to keep the body healthy. It has a variety of causes, but diuretics do not treat or cure those causes. Instead, loop diuretics like furosemide increase urine output if kidney failure significantly decreases urine volume.<\/span><\/p>\n

Excess serum electrolytes<\/span><\/h3>\n

Furosemide and other loop diuretics not only increase the body\u2019s elimination of water, but they also increase the body\u2019s elimination of electrolytes such as sodium, chloride, calcium, potassium, and magnesium. Like humans, dogs can have too much of one of these electrolytes in their blood. If any electrolyte gets too high in the body, the condition can evolve into a severe and even life-threatening problem. Veterinarians may use furosemide to treat high calcium levels (hypercalcemia) or high potassium levels (hyperkalemia) in dogs, quickly bringing those levels back to normal.<\/span><\/p>\n

Is furosemide safe for dogs?<\/span><\/h2>\n

The Food and Drug Administration (FDA) has approved furosemide for dogs as safe and effective. However, furosemide is never used in dogs that have stopped urinating (anuria) or are allergic to the drug. Additionally, furosemide cannot be started in animals with low electrolytes or in hepatic coma until the veterinarian corrects those problems.\u00a0<\/span><\/p>\n

Furosemide is used with caution in dogs with:<\/span><\/p>\n