The 5 Best Cat Dewormers of 2024 - Business Insider

The 5 best cat dewormers of 2024

This article was medically reviewed by Karie Johnson, DVM, a veterinarian in the south suburbs of Chicago whose focus is on nutrition, osteoarthritis, behavior, and end-of-life care. She is published in the Journal of the American Veterinary Association.
An orange tabby cat is taking a pill that is held out in a hand.
The best cat dewormers come in two main forms: tablets and topical treatments.
OlyaSolodenko/Getty Images
  • Best broad-spectrum
  • Best oral tapeworm dewormer
  • Best topical tapeworm dewormer
  • Best oral parasite preventive
  • Best topical parasite preventive
  • What to look for
  • How we selected
  • FAQs
  • Types of worms

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If your cat has worms, you want to get rid of them fast and prevent them from coming back. Deworming medications kill the parasites your cat already has, while parasite preventives stop future infections from taking root. But with so many products available, it can be difficult to choose one of the best cat dewormers for your individual kitty.

For this guide, we selected products based on their safety, efficacy, number of parasites targeted, and ease of use. We also consulted veterinarians about treating and preventing intestinal parasites in cats. Our top pick for the best cat dewormer is Drontal, which kills more worms than any other medication.

Intestinal parasites, commonly referred to as worms, hide inside your cat where they silently cause harm. Common intestinal parasites in cats include roundworms, tapeworms, and hookworms. Some, like roundworms and hookworms, can also infect humans. Different drugs kill different worms, so you'll need to visit your vet for a fecal test before giving your cat a dewormer. Further, the dewormers we recommend require a prescription from your vet. Once your vet has determined what kind of worms your cat has, you can use one of the following treatments to get rid of them.

Read more about how Business Insider Reviews tests and researches pet products.

Our top picks for the best cat dewormers

Best broad-spectrum: Drontal Dewormer - See at Chewy

Best oral tapeworm dewormer: Droncit Tablets - See at Chewy

Best topical tapeworm dewormer: Centragard Topical Solution for Cats - See at Petsmart

Best oral parasite preventive: Interceptor Flavor Tabs - See at Chewy

Best topical parasite preventive: Revolution Plus Topical Solution for Cats - See at Chewy

Best broad-spectrum

Drontal Broad Spectrum Dewormer

Bayer Drontal Broad Spectrum Dewormer effectively eliminates several types of intestinal parasites including tapeworms, hookworms, and roundworms.

What we like
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Veterinarian recommended
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Kills several types of worms
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Safe and reliable
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Kills all parasites within seven days
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Low risk for side effects
What we don't like
  • con icon Two crossed lines that form an 'X'. Not for kittens younger than 8 weeks old or less than 2 pounds
  • con icon Two crossed lines that form an 'X'. Can be hidden in food but may be difficult to administer if cat doesn't easily take pills

A broad-spectrum dewormer can knock out multiple types of parasites at the same time. We recommend Bayer Drontal Broad Spectrum Dewormer because it is safe, effective, and eliminates all parasites within seven days. No other cat dewormer kills as many different types of worms as Drontal. This dewormer features two powerful active ingredients, pyrantel pamoate and praziquantel, which together cover tapeworms, hookworms, and roundworms.

To give your cat this medicine, place the tablet far back in their mouth until they swallow it or crumble and mix it into a small amount of wet food. Drontal has a very low risk for side effects and is safe for kittens and cats more than 8 weeks old and ranging from 2 to 16 pounds.

Bayer Drontal Broad Spectrum Dewormer requires a prescription from your veterinarian. Don't skip this step because cats may have other parasites that even broad-spectrum dewormers can't eliminate.

When using a broad-spectrum dewormer like Drontal, your cat may require one or more follow-up treatments to make sure all the worms are eliminated. If your cat has fleas, you should also use one of the best flea treatments for cats to prevent future tapeworm infections.

Best oral tapeworm dewormer

Droncit Tablets for Cats

One Droncit tablet quickly and safely kills tapeworms in cats and can be given mixed with food.

What we like
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Kills tapeworms within 24 hours
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Easy-to-administer tablet
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Powerful active ingredient
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Long-trusted brand name
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Affordable
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Single pills available for purchase
What we don't like
  • con icon Two crossed lines that form an 'X'. Some cats may experience salivation or diarrhea after taking
  • con icon Two crossed lines that form an 'X'. Not for kittens under than 6 weeks old

Droncit Tablets tackle tapeworm infestations quickly and safely in cats and kittens 6 weeks of age and older. They are conveniently sold per pill, unlike the other tapeworm dewormer we considered, Bayer Tapeworm Dewormer Tablets, which are sold in a three-pack and at a slightly higher cost per pill.

Each tablet contains 23 milligrams of the active ingredient praziquantel, which works to paralyze and eliminate tapeworms within 24 hours. This ingredient is effective against the most common species of tapeworms (Dipylidium caninum and Taenia taeniaeformis), eliminating them in a single dose. You can feed the tablet to your cat whole or crumbled and mixed with food.

Because cats can become reinfected by ingesting another flea, effectively eliminating tapeworms requires treating your cat for fleas as well.

Best topical tapeworm dewormer

Centragard Topical Solution for Cats

One dose of Centragard Topical Solution quickly and safely kills tapeworms in cats, treats hookworms and roundworms, and prevents heartworms when given monthly.

What we like
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Kills tapeworms with one dose
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Easy-to-administer topical solution
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Treats and prevents roundworms and hookworms
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Prevents heartworms when given every 30 days
What we don't like
  • con icon Two crossed lines that form an 'X'. Not for kittens less than 7 weeks old or weighing less than 1.8 pounds
  • con icon Two crossed lines that form an 'X'. Not for use in pregnant or nursing cats

Centragard quickly and safely treats tapeworms and two other intestinal parasites (hookworms and roundworms) in cats and kittens 7 weeks of age and older. It is a great option for cats that won't take pills. Simply squeeze the liquid in one spot on the back of your cat's neck and allow it to dry. You can use Centragard one time to treat an infestation of tapeworms, hookworms, or roundworms, or give it monthly to keep your cat free from intestinal parasites and also prevent deadly heartworms.

Centragard contains the active ingredients eprinomectin and praziquantel, which work to kill worms and prevent future infections. These ingredients are effective against the two most common species of tapeworms (Dipylidium caninum and Taenia taeniaeformis), two species of hookworms (Ancylostoma tubaeforme and Ancylostoma braziliense), one species of roundworm (Toxocara cati), and heartworms.

Because cats can become reinfected by ingesting another flea, effectively eliminating tapeworms requires treating your cat for fleas as well.

Best oral parasite preventive

Interceptor Flavor Tabs

Given monthly, Interceptor Flavor Tabs prevent heartworms and treat and control roundworms, adult hookworms, and adult whipworms.

What we like
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Prevents heartworms
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Treats and controls roundworms, adult hookworms, and adult whipworms
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Easy-to-administer flavored tablet
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Protects for 30 days
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Safe for kittens as young as 6 weeks of age
What we don't like
  • con icon Two crossed lines that form an 'X'. Can be difficult to give some cats oral medications
  • con icon Two crossed lines that form an 'X'. Some cats don't like the taste
  • con icon Two crossed lines that form an 'X'. Doesn't protect against fleas, which transmit tapeworms

Interceptor is a great choice for pet owners who wish to give an oral preventive rather than a topical product because of the many parasites it protects against. In addition to preventing deadly heartworm disease, Interceptor Flavor Tabs treat and control roundworms, adult hookworms, and adult whipworms with the active ingredient milbemycin oxime. Each pill protects for 30 days, and it's safe for kittens as young as 6 weeks of age.

Interceptor is one of only two chewable parasite preventives available for cats, Heartgard being the other option. Unlike Interceptor, Heartgard only treats and controls one other parasite (hookworms) in addition to heartworms.

You can give your cat an Interceptor Flavor Tab as a treat or hide it in a small amount of wet food. You'll need a prescription from your veterinarian to purchase Interceptor. As with all heartworm medications, your cat needs a heartworm test prior to starting this preventive and once a year thereafter.

Best topical parasite preventive

Revolution Plus Topical Solution for Cats (3-pack)

Safe for use in kittens as young as 8 weeks, Revolution Plus Topical Solution treats, controls, and prevents more parasites than any other topical product, including roundworms, hookworms, heartworms, fleas, ticks, and mites.

What we like
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Kills and prevents six types of parasites
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Once-monthly treatment
  • Check mark icon A check mark. It indicates a confirmation of your intended interaction. Easy to administer
What we don't like
  • con icon Two crossed lines that form an 'X'. Does not kill tapeworms
  • con icon Two crossed lines that form an 'X'. Caution required in cats with a history of neurologic disorders
  • con icon Two crossed lines that form an 'X'. Not labeled for use in breeding, pregnant, or nursing cats

Our pick for best topical parasite preventive is Revolution Plus Topical Solution because it protects cats against six different parasites — more than any other topical preventive. Revolution Plus beat out the other topical preventive we considered, Bravecto Plus Topical Solution, because it is safe for kittens 8 weeks and older. Bravecto cannot be used for kittens younger than 6 months old. Revolution Plus also kills ear mites, while Bravecto does not.

Revolution Plus treats and controls two intestinal worms: roundworms and hookworms. It also prevents heartworms, treats and prevents flea infestations (killing adult fleas before they can lay eggs), and treats and controls ear mites and three different tick species (black-legged or deer tick, Gulf Coast tick, and American dog tick). It does not kill tapeworms.

Given every 30 days, this monthly spot-on treatment is simple to apply in one spot to your cat's skin between the shoulder blades. The medication, a small amount of liquid, is absorbed through the skin and dries quickly, leaving nothing behind. Unlike some other topical products like Advantage Multi and Bravecto, you do not need to wear gloves to apply Revolution Plus and you can touch your cat after application, even if the product has not completely dried. If you get the medication on your hands, simply wash them with soap and water.

Before choosing a broad-spectrum parasite preventive for your cat, have a conversation with your veterinarian who can advise you on what might be best depending on your cat's lifestyle and what parasites are most common in your area.

You must obtain a prescription from your veterinarian to purchase Revolution Plus. As with all heartworm medications, your cat needs a heartworm test prior to starting this medication and once every year after. Revolution Plus should be used with caution in cats with a history of neurologic disorders such as seizures.

What to look for in cat dewormers

It's important to take your cat to the vet before giving them a dewormer. If you suspect your cat has worms, always take them to the veterinarian for a physical exam and fecal test, which is an examination of the stool that reveals what type of worms your cat has.

"Generally speaking, if they have one parasite, they'll have multiple parasites," says Dr. Herman Jeffer, a veterinarian at Cornwallis Road Veterinary Hospital. "If they have roundworms, it's not uncommon to see tapeworms or other worms as well, or 'non-worms' like coccidia."

Certain single-celled microscopic parasites (protozoa), including coccidia and Giardia, cause symptoms similar to those caused by intestinal parasites, but they are not true worms. They require different prescription medications to treat them — dewormers won't help.

Even though some dewormers do not require a prescription, do not skip the vet visit since different drugs treat different worms. Your vet can also determine if your cat may have other health issues that need to be addressed.

"It's important to see your veterinarian so they can identify what parasites are present and then prescribe the appropriate deworming medication," says Dr. Colleen Sawyer, a veterinarian with Rolesville Veterinary Hospital. "Your vet can also explain any risks for human disease, which is also parasite dependent."

Depending on the type of worms found, your cat might also need follow-up deworming and a follow-up fecal exam to make sure no parasites remain. Your veterinarian can also identify any other health issues that might be going on aside from intestinal parasites.

How we selected the best cat dewormers

My knowledge about intestinal parasites and their treatment and prevention is informed by a 20-year career writing and editing for pet and veterinary publications. I also worked as an assistant in veterinary hospitals for eight years, where one of her jobs was conducting fecal tests to look for the presence of worms. 

For this guide to the best cat dewormers, I consulted two veterinarians for advice regarding the treatment and prevention of intestinal parasites like tapeworms, roundworms, and hookworms, as well as heartworms and ectoparasites like fleas, ticks, and mites. Although this information guided our product selection, our experts did not specifically endorse any of the products included in this guide. I also used the quick product reference guide published by the independent, nonprofit Companion Animal Parasite Council. It lists all FDA- and EPA-approved parasite control products for small animals, including each product's active ingredients and uses.

Here are the main attributes I looked for:

Safety and efficacy: I only considered FDA- or EPA-approved dewormers and preventives for this guide. We then consulted the Merck Veterinary Manual to ensure all ingredients in these products are known to be safe and effective for use in cats and kittens.

Number of parasites treated: In general, the more parasites a preventive product covers, the higher it was rated. 

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