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Is my cat's lethargy and not eating due to buprenorphine pain meds?

Updated On September 23rd, 2025

Pet's info: Cat | Turkish Angora | Male | neutered | 14 years and 1 month old | 15 lbs

My cat starting limping 2 days ago. I took him to the emergency vet and when they examined him his limp seemed to have mostly improved. The vet wasn't sure what it was but said maybe arthritis (my cat is 14), a muscle strain or blood clots. She gave him buprenorphine for pain. I think he hasn't eaten or drank in 2 days. Yesterday he was moving around a fair bit but today he's mostly sleeping. He's normally a very active cat.

1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on June 13th, 2017

Have you been giving him the buprenorphine? This could be making him very lethargic. If he doesnt seem really painful, you may consider stopping the pain meds or giving him a half dose to see if they helps to perk him up a bit. But if he is continuing to be lethargic despite not being on pain medication then I believe he needs to follow up with your vet to ensure nothing else is wrong. I hope he starts to feel better!

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