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Why isn't my cat eating his kidney food even with an appetite stimulant?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 18 years and 9 months old | 9.5 lbs

Hi tony started taking an 1/8 mirtazapine appetite stimulant every 48hrs on sept 30th to help him eat his kidney food. It hasn’t helped much.. I’m still mixing kidney with his senior food and he is still being very picky. My vet told me start giving him less mirtazapine, every 72 hrs instead of every 48 hrs. Is it common for an appetite stimulant to not help? I expected him to be so hungry that he wouldn’t be so picky about the food. any advice? Should I even bother with the appetite stimulant?

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on October 29th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Appetite stimulants sometimes do not help so it is not uncommon to be in this spot especially if there is significant underlying disease. I would recommend you contact your veterinarian who knows the entire medical history to make further recommendations. There are other appetite stimulants that can be tried such as Entyce. Good luck and have a great day!

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