Best Dog &amp; Cat Diuretics

Quick and Effective

Quick and effective in relieving swelling and available in multiple dosages.

Helps reduce water retention caused by heart failure to reduce swelling and make your dog or cat more comfortable. Available in 12.5 mg, 20 mg, 40 mg, 50 mg, and 80 mg dosages. Also gets rid of extra sodium in the body.

Can cause dehydration and more urination.

Best Bang for the Buck

Spironolactone

Tablets

Doesn't Lower Potassium

Affordable diuretic that also minimizes a common side effect with most other diuretics.

Prescribed to treat excess fluids due to congestive heart failure and can also be used to treat high blood pressure. Unlike many other diuretics, this drug does not decrease your pet's potassium levels.

Injectable for Dogs, Cats & Horses

Will likely lead your pet to urinate more frequently, which may lead to accidents.

Salix

Injectable Diuretic

More powerful diuretic that can be used for cats and dogs to relieve water retention quickly.

Helps your dog or cat feel more comfortable by quickly getting rid of extra fluids (often caused by heart failure/heart issues). Can be used as an injection or given orally.

Side effects include dehydration and increased or decreased urination.

Furosemide

Oral Solution for Dogs

Liquid Diuretic

Liquid version of a common diuretic for pets that may be easier for owners to administer.

Helps remove extra fluid caused by kidney or heart issues. Can also help with high blood pressure and high potassium levels. Made in a liquid form instead of tablets which may be easier to administer or mix into food.

Spironolactone/ Hydrochlorothiazide

The liquid version is only designed for dogs. May cause your dog to urinate more often.

This combo drug treats extra fluid while not causing potassium levels to decrease like many other diuretics.

Used to treat extra fluid caused by heart failure. Usually prescribed if other diuretics haven't worked or if other medications have caused low potassium levels as this medication doesn't lower potassium levels. Can also help treat high blood pressure.