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My cat has low potassium. Will he need supplements long-term?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 18 years and 1 month old | 9.5 lbs

Hello my vet has decided to put tony on a potassium supplement tablet because his labs show a potassium level of 3.1 but all his kidney values are normal. He is already on amlodipine and methimazole for hi blood pressure and hyperthyroidism. My question is, when we check potassium again in 2 weeks, if the potassium supplement raises his potassium level to a normal range , does he remain on the supplement indefinitely? .. or will it take more than 2 weeks to normalize his potassium level? Thx

1 Answer

Most Helpful Answer

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Answered By Dr. Kristin DVM

Veterinarian

Published on February 1st, 2018

That is great that Tony’s kidney values are normal! Depending on the lab results Tony will likely need to stay on potassium supplementation. That is something your veterinarian will determine, but based on the information you have shared, it is likely to be a long term treatment. The levels will need to be checked regularly and the dose might be adjusted. I hope Tony does well.

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