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My dog took Kelflex and is acting strange. Is this a drug reaction?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 55 lbs

My dog took kelfelx and is acting very strange and shaking

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on October 27th, 2017

Hello, sometimes pets can have reactions to antibiotics, just like people. If this medicine was prescribed for Winston, do not give anymore until you talk to your vet. If this was an accidental ingestion, it depends on how many he ate. It is not more than a pill or 2, he will be fine. If this was a large overdose of 10 or more pills or capsules , (especially if they were 500 mg), I would contact your veterinarian or an emergency clinic tonight. Hope all is well. Thank you for using Petco Pet Education Center, formerly Petcoach.

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