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Feline Hypokalemia

Hypokalemia is a low amount of potassium in the blood.

Potassium is a vital nutrient in every cell that supports nerves, muscles, digestion, and the heart.

The kidneys get potassium through food and excrete it through urine. When the amount of potassium gained and lost is equal, the potassium level is normal.


The most common cause is kidney failure. Other causes include:


Mild hypokalemia may not cause any noticeable signs. However, if severe hypokalemia develops, it can have life-threatening effects.

Signs may include:


Some tests your veterinarian may perform:


Most veterinarians will recommend the following treatments for cats with hypokalemia:


Feed your cat a high-quality diet, and give potassium supplements if recommended by your veterinarian.


Depending on the cause, sometimes potassium supplements are needed for life.

Medically Reviewed by Sara Ochoa, DVM

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