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How to dose pyrantel pamoate for your cats and kittens by weight?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 1 month and 29 days old | 11 lbs

I purchased a 50 mg suspension pyrantel pamoate to deworm my cats. I was wondering what the proper dosage is for the following cats: Male/9 months old/ 12 lbs Male/ 9 month old 10 lbs Male/ 8 weeks old/ 2 lbs Thank you!

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on May 10th, 2017

What an adorable kitten!! Each ml of the drug contains 50mg of the pyrantel base, and the dose for pyrantel pamoate is 5mg/kg. Here is how to figure it out: Body weight in pounds divided by 2.2 gives you the body weight in kg. For example, a 12 pound cat is 5.45 kg. Then, take the kg weight and multiply it by 5 -- in the example above, the 12 pound (5.45 kg) cat would get 27.27 mg of the pyrantel. Since each ml contains 50 mg, take 27.27 and divide by 50......27.27/50 = 0.54 ml. 12 pound cat = 0.54ml 10 pound cat = 0.45ml 2 pound cat = 0.09ml Be sure to dose them again in two weeks to make sure all the worms are killed. I hope this helps!

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