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Oral Potassium Supplements for Pet Hypokalemia & Kidney Disease

Published on September 10, 2024
Updated on November 5, 2025

Oral potassium supplements are given to pets that have kidney disease which causes low potassium levels over time.

Summary

Used For:

Renal disease, hypokalemia

Brands:

Tumil-K, RenaKare

Species:

Dogs and cats

Other names:

Potassium gluconate, Kaon

Drug type:

Supplement

Prescription required:

Yes

Pregnancy and lactation:

Safe use in pregnant or lactating animals has not been established.

Side effects:

Muscle weakness, abnormal heart rhythms or rates, a weak pulse, vomiting, diarrhea

General description

Oral potassium supplements are used to treat potassium deficiency (hypokalemia), often occurring as a result of kidney disease. These supplements should only be used if evidence of low potassium levels have been noted on your pet’s blood work. Potassium is important for many functions in the body. If hypokalemia is present, it needs to be corrected so animals can fully function.

Uses

Hypokalemia, renal disease

How it works

Oral potassium supplements replace the potassium in the body that is lost due to kidney disease.

Dosage

Dogs and Cats: 2 milliequivalents per 4.5 kilograms body weight by mouth or in food twice daily.

Forms

Tablets, powder and gel forms are available. These vary in strength depending on which product you choose.

Storage information & handling

Tablets and powder: Keep dry and away from direct sunlight.

Gel: Store in a cool, dry location at room temperature.

What results can I expect?

Hypokalemia can cause various symptoms in pets, such as lack of appetite, lethargy, vomiting and weakness. These signs will begin to resolve as the potassium levels normalize in your pet.

Missed Dosage

Continue dose at the next scheduled time. Do not double the dose.

Overdose / acute toxicity

Overdose can cause more severe side effects.

Side effects

May include:

  • Muscle weakness
  • Vomiting
  • Diarrhea

Contraindications

*Do not use in animals with a previous hypersensitivity.

*Do not use in animals without monitoring their potassium levels.

Drug interactions

No drug interactions are known.

Precaution

Use cautiously.

Frequent monitoring of potassium needs to be done to make sure levels do not become too high while on this supplement.

Sources

Saunders Handbook of Veterinary Drugs

Disclaimer
The information contained on this page is for educational purposes only. This medication should only be given under the advice of a veterinarian who has examined your pet under the laws applicable to your state of residence.

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