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My dog was treated for tapeworms, but still has symptoms. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Female | unspayed | 4 months old | 7.5 lbs

My dog was treated for tapeworm 10 days ago but she still has signs of the tapeworm. Is this normal?

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on March 3rd, 2020

Yes. This is why we recommend multiple dewormings. The dewormer only kills the parasite at certain stages. If all the worms present in her body are not in the same stage of their life cycle when you administer the dewormer the new worms can "hatch" and the dog is still infected. Remember, dogs get tapeworms by eating infected fleas (fleas that carry the tapeworm larvae) so you need to get the fleas under control as well. She could have also been re-infected since you gave the dewormer. I suggest you have her treated again, be sure you have treated the environment and that every animal in the house (even inside only cats) is on a monthly flea prevention. https://vcahospitals.com/know-your-pet/tapeworm-infection-in-dogs

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