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Spironolactone is a diuretic used to treat congestive heart failure and fluid accumulation in the abdomen ascites.
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25 mg per tablet
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25 mg 100 count bottle
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25 mg 500 count bottle
Item qualifies for FREE SHIPPINGThis item requires a RX
50 mg per tablet
This item requires a RX
50 mg 100 count bottle
This item requires a RX

**Note: This product requires a veterinarian's prescription to purchase.At checkout you will need to provide your veterinarian's FAX or email address. We will then send him or her a prescription verification that he or she will need to sign and return before we can ship you this product.


*  Often effective when other diuretic treatments don't work

*  Does not cause potassium loss

Dosage and Administration:

Spironolactone is given orally. Always follow the dosage instructions provided by your veterinarian. If you have difficulty giving the medication, contact your veterinarian.

Food may increase the absorption of Spironolactone. Consult your veterinarian about giving this medication with food.

This medication should only be given to the pet for whom it was prescribed


Spironolactone will cause your pet to urinate more often. Your pet may have more accidents and need to go outside or use the litter box more.

Your pet needs to eat and drink well while taking Spironolactone or the risk of side effects increases. Contact your veterinarian if your pet is not eating or drinking well. Also contact your veterinarian if your pet has vomiting, diarrhea, or becomes lethargic while taking Spironolactone.

Do not discontinue the medication unless directed by your veterinarian.

Not for use in animals hypersensitive allergic to Spironolactone.

Do not use in pregnant or lactating animals female animals nursing their young.

Do not use in animals with high potassium levels in the blood, or Addison's disease hypoadrenocorticism.

Use with extreme caution in animals with liver or kidney disease.

Do not use in animals with Cushing's disease hyperadrenocorticism who are taking the medication mitotane.

Possible Side Effects:

May cause dehydration with excessive thirst and decreased urine production or electrolyte imbalances e.g., high potassium and low sodium, often with weakness, stumbling, or lack of energy. May cause vomiting and diarrhea in some animals. If you see any of these signs, contact your veterinarian immediately.

If your pet experiences an allergic reaction to the medication, signs may include facial swelling, hives, scratching, sudden onset of diarrhea, vomiting, shock, seizures, pale gums, cold limbs, or coma. If you observe any of these signs, contact your veterinarian immediately.