What cat dewormer kills all worms?

By Deanne

May 11, 2026

There is no single product that kills all types of worms in cats, but vet-approved dewormers (when used correctly) can eliminate all common feline intestinal worms. The key is proper diagnosis and appropriate medication.

The most effective way to kill worms in cats is vet-recommended deworming medication, based on the type of worms:

Roundworms & Hookworms are treated with medications such as pyrantel pamoate, fenbendazole, or milbemycin oxime
Tapeworms require praziquantel (most other dewormers do not kill tapeworms)
Whipworms (rare in cats) are treated with fenbendazole

Many dewormers combine these drugs to target multiple worms at once, which can be an effective and fast way to kill all worms in cats. Try the Itch Wormer Tablets for Cats which targets all common parasitic worms in felines to keep your pet and your family safe. With a quarterly Itch wormer subscription, we will deliver the perfect dose to your pet, exactly when you need it, so you never forget.

In addition to using worming treatment on you cat, you should treat your cat with ongoing flea treatment. Why? Because fleas transmit tapeworms, and just using dewormer doesn't kill the source. Try the Itch Flea Treatment for Cats which targets fleas and their eggs to stop infestations and protect your kitty from future flea problems.

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What cat dewormer kills all worms?