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My dog is lethargic and won't eat after Cerenia for pancreatitis. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Bichon Frise | Female | spayed | 12 years and 9 months old | 14 lbs

My dog was prescribed Cerenia after a diagnosis of pancreatitis. I didn't give it to her right away because 36 hours after the eposide she was eating and drinking small amounts of food and water. I noticed she was smacking her lips a sign of nausea so I gave her one. She first acted more lethargic. She isn't back to normal after the attack. Now she won't eat. She will drink water. Do you think she'll start eating again once the drug has left her system in 24 hours?

1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on October 18th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! I have seen lethargy with the injectable form of cerenia not so much with the oral. It is only given once daily so yes it should be pretty much out of her system by 24 hours. Cerenia helps with nausea and eating. I think she is most likely not eating from her pancreatitis not from the cerenia. I would contact your vet to discuss other medication options since you seem to not like the cerenia. Personally I think you should be giving it. Good luck

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