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My dog still has worms after deworming. Should I give another dose?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | 5 lbs

My chihuahua has worms in his poop, I gave him half of a Bayer quad dewormer pill about two weeks ago but he is still showing signs of worms? Should I retreat and give him the other half of the pill? Thank you.

1 Answer

Most Helpful Answer

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Answered By Sarah Derksen, DVM

Veterinarian

Published on April 1st, 2018

Hi. Poor Gizmo. It is important to have fecal sample tested and get an exact answer of what the parasite is. It could be the over the counter medication doesn't cover the particular parasite. It is also common that the over the counter medications fail at treatment. I suggest you get a proper prescription from your veterinarian.

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