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My cat is sleeping a lot after Metronidazole. Is this normal?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | 5.7 lbs

Metronidazole was given to my cat, now he's been sleeping like a log for the last 3 hours. Normal??

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 26th, 2017

Lethargy can be a side effect of Metronidazole, so that can be why Mur is sleeping so much. It could also be that whatever illness he is being treated for is making him lethargic. If he seems very lethargic tomorrow, I would give the vet a call to let them know you are seeing this symptom in Mur.

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