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My cat took praziquantel. How fast does it work if she's sick?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Female | spayed | 2 years and 2 months old | 4 lbs

I treated my cat with praziquentel for tape worm.how quickly will it work?she is throwing up and sratces.i see see no fleas.

1 Answer

Most Helpful Answer

Published on October 10th, 2017

It starts killing the worms very quickly, but are you sure that is why she is throwing up? Have you had her examined by a vet to make sure there isn't something else going on, like food allergies, pancreatitis, or an obstruction? I prefer to use topical dewormers like Profender because they absorb into the skin to kill the parasites and I don't have to worry about the cat vomiting up the pill before it has time to work. Hope that helps!

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