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My senior dog on Vetoryl: weight loss, loose stools, tired. Help!

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | spayed | 16 years and 6 months old | 25 lbs

My 16 year old dog has been taking Vetoryl for 2 weeks, she went herself twice today, was sick 48hrs ago ( isotope test normal at vets). She has lost weight has loose stools and no appetite and very tired . Dose 30mg. I'm worried sick.

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on November 26th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! These are possible side effects that can be seen with the administration of this medication. I recommend that you contact your veterinarian to see if they agree knowing her medical history and if they would consider lowering the dose or using something else. I do not recommend you stop this medication without talking with them first. Best of luck!

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