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My dog's urine smells sweet on prednisone. Should I be concerned?

Updated on September 23rd, 2025

Pet's info: Dog | French Bulldog | Male | neutered | 1 year and 1 month old | 22 lbs

Our young dog was put on prednisone and antibiotics for a bad allergic reaction to some bug bites and then scratched his skin raw. The reaction cleared up within a couple days and we just finished one week of the prednisone and are now weaning off. He’s been drinking and urinating frequently (which I know is a side effect of prednisone), but today I noticed his urine smelled very sweet and am concerned. Could this just be because of the prednisone? Will it go away after we’re done with it?

1 Answer

Most Helpful Answer

Daniel Fonza, DVM

Answered By Daniel Fonza, DVM

Veterinarian

Published on September 2nd, 2018

Typically, Prednisone does not cause the urine to become sweet smelling. I would recommend having Earl's urine tested to see if there are any abnormalities that need to be addressed. High levels of glucose in the urine can give off a sweet odor sometimes. It would be best to have his urine tested so that treatment can be initiated early on before the potential problem becomes worse. I hope this helps guide you in the right direction. Please let me know if you have any other questions or concerns and I would be more than happy to help you further.
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