The Best Cat Dewormers
Pet Digestive Issues & Care

One of the most common health issues among cats are parasitic worms, which can affect your cat’s digestive system. If left untreated, worm infestations may lead to unhealthy skin and coat as well as serious medical problems, such as gastrointestinal disturbances and anemia. All cats can be infected with parasitic worms, and they can be passed to other animals or even to humans, making prompt treatment a must. Fortunately, worms are easy to treat when you choose the right deworming medicine.

There’s a lot to consider when choosing the right dewormer for your cat. Because there are many treatments available, it’s difficult to know which treatment is best, how regularly you should use it, and how it works. That’s why we looked at a variety of cat deworming products to help you find the right solution for your cat or kitten.

After looking at dozens of cat dewormers, we’ve identified Bayer Tapeworm Dewormer as the best dewormer for cats. It can be used for cats over 6 weeks of age, and the administration is easy since the tablets may be crumbled and mixed with food.

The 5 Top-Rated Cat Dewormers

Editor's PicksBrandRating
Top PickBayer Tapeworm Dewormer
Runner UpNaturpet D Wormer3.2
Best Budget PickExcel Roundworm Liquid Cat De-Wormer, 4-Ounce 3.9
Best Kitten DewormerHomeopet Feline Wrm Clear Drops 3.4
Best Liquid DewormerProSense Liquid Dewormer Solutions For Cats, 4-fl. oz.

*Ratings are from Amazon at the time of publication and can change

Our Top Pick: Bayer Tapeworm Dewormer

The most common worm infestation that affects cats and kittens are tapeworms, which are easily transmitted from fleas, especially when they bite, or from rodents. If you’re looking for the best way to remove common tapeworms in your cat or kitten, you’ve found it. With just one tablet of Bayer Tapeworm Dewormer Tablets for Cats you can rid of the worms which are causing your cat’s discomfort. The tablet contains praziquantel, which is a medication used to treat these common gastrointestinal parasitic worms.

It comes in an easy-to-administer tablet formulation, and it’s an effective at-home treatment. You can crumble the tablet and sprinkle into your cat’s food if your finicky feline does not cooperate when taking pills. Customers appreciate the quick-working formula, which kills parasitic worms within 24 hours.

Bayer Tapeworm Dewormer Key Features:

  • Effective way to remove common tapeworms
  • Easy to administer by mouth
  • Tablets may be crumbled and mixed with food
  • Safe for kittens from 6 weeks of age
  • Available without prescription

Our Runner-up Pick: NaturPet D Wormer

A powerful oral remedy with a blend of herbs that is 100% safe and effective when used as directed

NaturPet D WORMER is a great choice because it is made of natural herbs like wormwood aerial parts, black walnut green hull, black seed, or papaya leaf, which helps kill and expel most common worms when used properly. It also promotes healthy digestion.

This natural dewormer works for dogs as well. If you use it to deworm kittens and pups, consider that the mother also must be treated. Administration is simple: just administer orally or add it to your pet’s food. The bottle contains enough dewormer for two to seven treatments.

NaturPet D Wormer Key Features:

  • Natural product
  • Protects the stomach and helps digestion
  • Easy to administer by adding to your cat’s food
  • 100 ml bottle contains enough dewormer for 2-7 treatments

Best Budget Pick: Excel Roundworm Liquid Cat De-Wormer

Best Budget
Excel Liquid Roundworm De-Wormer for Cats, 4-Ounce, Safe & Effective
Effectively remove large roundworms with this tasty and easy-to-feed liquid

Excel Roundworm Liquid Cat De-Wormer is an effective treatment for large roundworms. It comes in a 4 fl oz bottle, which means it contains enough liquid for multiple treatments.

It’s safe for kittens of at least six weeks of age, provided that the pet weighs 2.5 pounds or more and is not pregnant or nursing. The liquid formulation is easy for your cat to swallow, meaning it’s easy for you to administer. Besides this, it has a tasty flavor and scent which your cat will love. You can give the dose by hand or mix it in your cat’s food, but be sure to give the proper dose based on your cat’s weight.

Excel Roundworm Liquid Cat De-Wormer Key Features:

  • Effectively treats roundworms
  • Bottle contains enough for at least 2 treatments
  • Tasty flavor and appealing scent
  • Affordable

Best Kitten Dewormer: HomeoPet Wrm Clear

Best Kitten Dewormer
HomeoPet WRM Clear creates an unfriendly environment for worms, flushing them harmlessly from the body

If you prefer a natural remedy, HomeoPet WRM Clear is an effective homeopathic treatment preferred by many pet owners, and it works both for cats as well as for dogs. The product comes in a liquid form, making it easier to administer, and it’s non-toxic, with no side effects. It has a great effect against most types of parasitic worms found in cats, and it’s even safe for pregnant cats.

HomeoPet WRM Clear does not actually kill worms, but flushes them harmlessly from your pet’s body. It can take up to two weeks to take full effect, and during this time you may see live worms in your pet’s stool. This is a good indication that the product is working.

HomeoPet Wrm Clear Key Features:

  • No side effects
  • Liquid formula for easy administration
  • Cures most types of parasitic worms found in cats
  • Safe for kittens and pregnant or lactating cats
  • Chemical-free formulation

Best Liquid Dewormer: ProSense Liquid Dewormer Solutions For Cats

Best Liquid Dewormer
A sensible roundworm solution containing the most effective OTC ingredients

If your cat has a roundworm infestation, Pro-Sense Liquid Dewormer is an effective liquid treatment. The active ingredient is piperazine citrate, which is currently the most effective OTC roundworm treatment you can buy. The product should be used only on cats and kittens 6 weeks or older, and it is not recommended for pregnant cats.

Its liquid formula makes this dewormer product easy to administer. You can give it directly to your cat or in her food. For maximum effect, the Pro-Sense Liquid Dewormer needs to be frequently administered. Fourteen days after the initial dose, you need to re-administer the product in the same dosage. Then, to prevent re-infestation, you should administer the treatment every 30 days.

Pro-Sense Liquid Dewormer Key Features:

  • Liquid formula is easy to administer
  • Can be given orally or in your pet’s food
  • Safe for kittens at least 6 weeks of age
  • Improvement noticeable in as little as 24 hours after the first dose

Who Should Buy a Cat Dewormer?

If your cat has diarrhea, bloody stool, a bloating or round belly, is vomiting, or if you see worms in the stool or near the anus, then your cat may have a parasitic worm infestation. If you’re not sure if your cat has worms or what type of worms she may have, a visit to the veterinarian is in order for a diagnosis.

Some cats are more prone to worms, such as cats that hunt and eat rodents or cats who are exposed to the infected stool of other animals. If your cat has fleas, she is also more likely to get tapeworms. Check out our list of the best cat flea collars to help prevent fleas. If your cat is prone to worms, prevention is the best medicine. Prompt treatment for a worm infestation is the best way to avoid potentially serious health complications, such as dehydration.

Important Features To Consider

Choosing the right cat dewormer can be overwhelming given the number of products on the market for worm prevention and treatment. There are several important features to consider when selecting a cat dewormer:

  • Effectiveness. Read the label of the product carefully, because there are different dewormers for different types of worms. You can also ask your vet for the most effective ingredients you can use to treat your cat.
  • Ease of administration. Dewormers typically come in liquid or tablet formulations. There are pros and cons to each, and it’s up to you to decide what will be easiest to administer to your cat. Taste is another consideration that can impact ease of administration. Your cat is (understandably) less likely to spit out a dewormer that tastes delicious.
  • Safety. Some dewormers are only safe for cats and kittens over a certain age or weight. There are several natural products available for those who prefer an all-natural deworming solution. Additionally, some dewormers should not be given to cats who are pregnant or nursing.

Frequently Asked Questions

What is a cat dewormer and how does it work?

Dewormers are oral medications used to treat and control intestinal parasites in cats, such as hookworms, tapeworms, and roundworms. Most worm parasites attack the intestinal tract, targeting various parts of the stomach and intestine.

Cat dewormers usually work by either dissolving or paralyzing the parasitic worm, causing it to come out with the cat’s stool. Completely eradicating a worm infestation typically involves several treatments, as some treatments don’t kill larvae. Thus, subsequent treatments are needed to eradicate the larvae as they mature.

What are the symptoms of worms in cats?

Depending by the type of parasitic worm, symptoms may differ, but there are some common health issues that your cat may show, such as:

  • Bloody stool
  • Diarrhea
  • Bloating, or round abdomen
  • Vomiting
  • Stool with visible worms
  • Worms visible near the anus
  • Constipation
  • Coughing
  • Weight loss

When can you deworm a cat?

Newly-adopted or newly-born kittens must be dewormed, usually starting at 6 weeks of age. This is a standard procedure that must be done, whether kittens have signs and symptoms of infestation or not.

In kittens, the deworming procedure must be done every 2 weeks from 6 weeks of age until the age of 3 months. After that, kittens must be dewormed monthly until they are 6 months old. Adopted kittens should also be dewormed immediately, with treatment repeated after two weeks of the initial treatment.

How many times does a cat need to be dewormed?

Studies have shown that usually cats re-contract worms in a short period of time after a deworming procedure, and it takes three months or more for the parasitic worms to reproduce and grow in numbers that it will become a serious health problem. That’s why cats should be usually dewormed every three months.

If your cat hunts rodents, your pet could be exposed to worms on a regular basis. If so, experts suggest deworming your cat every two months.

Other Cat Dewormers We Reviewed

We looked at 15 other cat deworming products. Even though they didn’t make our 5 best cat dewomers list, they’re the best of the rest and each is still a great option for your cat. The information you’ll need to compare each one is included with the listing.

Kitten Dewormers

Durvet WormEze Liquid Canine & Feline Antihelmintic

Durvet WormEze Liquid Canine & Feline Antihelmintic

When it comes to kitten dewomers, the liquid form is the best to administer. It can be used in food or drinking water, and it helps to remove large roundworms.

Key Features:

  • Removes large roundworms
  • Easy to administer
  • Can be added in food or drink
  • Safe for kittens over 6 weeks of age
  • Great taste

Cost: $8

Johnson’s Easy Wormer Granules For Cats & Kittens

Johnsons Easy Wormer Granules For Cats & Kittens


Another great choice for kitten is Johnson’s Easy Wormer Granules. It can be used from 6 months of age, and it is easy to use, odorless, and tasteless.  It is an effective treatment for roundworms.

Key Features:

  • Easy to administer
  • Can be mixed with the cat’s food
  • Treats cats up to 13lb (6 kg) and kittens up to 9 lb (4 kg)

Cost: $19

Peak Marketing Pet Wormer Gel

Peak Marketing Pet Wormer Gel


Looking for a tasty dewormer for pets that is also easy to use?  You’ve found it. This treatment contains the active ingredient piper zine, and it is safe for kittens over 6 weeks of age.

Key Features:

  • Removes large roundworms
  • Easy to administer
  • Can be mixed with food
  • Safe for kittens over 6 weeks of age
  • Vary tasty

Cost: $8.50

PetArmor Sure Shot Liquid Wormer for Cats

PetArmor Sure Shot Liquid Wormer for Cats


If you’re looking for a dewormer that removes three strains of roundworms in cats and kittens, this is a good choice. It has a delicious fish flavor and is easy to administer.

Key Features:

  • Works for three strains of roundworms
  • Easy to administer
  • Can be added to food
  • Delicious fish flavor
  • For kittens over 6 weeks of age

Cost: $80

Pyrintal Roundworm and Tapeworm Dewormer for Cats

Pyrintal Roundworm and Tapeworm Dewormer for Cats


This cat dewormer helps to eliminate roundworms and tapeworms. Reviewers say that in most cases, it is effective from the first dosage.

Key Features:

  • Broad-spectrum dewormer
  • Easy to use
  • Tablets may be crumbled and mixed with food or taken by mouth
  • Safe for kittens over 6 weeks of age

Cost: $25

Liquid Dewormers

Bob Martin Spot On Dewormer For Cats & Kittens

Bob Martin Spot On Dewormer For Cats & Kittens


If your cat weighs over 1 kg and you’re looking to give her a dewormer, Bob Martin Spot On is a fast and effective treatment for tapeworms, and it contains 4 treatments.

Key Features:

  • Treatment available up to 3 months
  • Easy to apply at the base of the cat’s neck
  • Contains the ingredient prarizquantel

Cost: $20

HARTZ UltraGuard Rid Worm Liquid for Cats

HARTZ UltraGuard Rid Worm Liquid for Cats


If your cat is over 8 weeks of age, you can treat him with Hartz UltraGuard Liquid. It effectively removes roundworms from cats and kittens.

Key Features:

  • Removes roundworms from cats and kittens
  • For kitten over 8 weeks of age
  • Mild yet effective 

Cost: $12

Pro-Sense Roundworm Liquid De-Wormer for Cats

Pro-Sense Liquid De-Wormer for Cats


Is your cat infested with roundworms? The this is a great solution. This product removes roundworms, it has a tasty flavor, and can be used on kittens over 6 weeks of age. Its active ingredient is Piperazine.

Key Features:

  • For kittens of over 6 weeks of age
  • Easy administration
  • Flavored formula appeals to cats
  • Safe but effective active ingredient

Cost: $12

Broad Spectrum Dewormers

Alternative Animal Worm Free Naturally-Natural Cat Wormer

Alternative Animal Worm Free Naturally-Natural Cat Wormer


Alternative Animal Worm Free Naturally powder is a natural dewormer for cats. It doesn’t work chemically on the worms, but mechanically. It affects parasitic worms causing dehydration or loss of body fluid, which can be dangerous.

Key Features:

  • Eliminates worms without chemicals
  • Safe and non-toxic
  • Contains 15 trace minerals
  • Digestive aid

Cost: $22

Bayer Drontal Broad Spectrum Dewormer

Bayer Drontal Broad Spectrum Dewormer


Bayer Drontal is an effective treatment for tapeworms, hookworms, and large roundworms in cats and kittens.

Key Features:

  • Broad spectrum dewormer 
  • Can be used for cats and kittens over 1 month age
  • Treats tapeworms, hookworms, and roundworms

Cost: $213

Cat-4 Alternative Wormer by Remedi Animal Solutions

Cat-4 Alternative Wormer by Remedi Animal Solutions


An easy to use natural dewormer, Cat-4 Alternative Wormer is fast-acting and effective. It can be used as an oral spray or mixed with your cat’s drinking water to aid in preventing or reducing worm infestations.

Key Features:

  • Fast acting and effective oral spray
  • Safe, and all-natural homeopathic formula
  • Approximately 100 doses per bottle

Cost: $30

Natural Dewormers & Preventatives

NHV Dewormer for Dogs, Cats, Puppies, Kittens

NHV Dewormer for Dogs, Cats, Puppies, Kittens


NHV Dewormer is a totally natural product that helps to eliminate internal parasitic worms. It is an easy to use product, due to its liquid formula. The treatment should be repeated after 3 months from the first dosage.

Key Features:

  • Broad spectrum dewormer
  • Contains herbs which help parasitic damage
  • Made with 100% natural ingredients

Cost: $60

Homeopet Remedies Wrm Clear

Homeopet Remedies Wrm Clear


HomeoPet Wrm Clear is a natural dewormer which helps to remove hookworms, roundworms, and tapeworms. It is easy to administer and can be mixed with food or water. The product can also be used as a preventative, and it is also safe for kittens.

Key Features:

  • 100% natural product
  • Easy to dose, and can be used with food, or water
  • Acts also as a preventative

Cost: $10

Lumino Organic Diatomaceous Earth For Pets

Lumino Organic Diatomaceous Earth For Pets


Looking for an alternative to toxic chemicals? This is a natural dewormer and a treatment for fleas and ticks.

Key Features:

  • Organic alternative for parasite control
  • Effective natural wormer
  • Food-grade
  • Made in the USA

Cost: $20

Wholistic Pet Organics Diatomaceous Earth Supplement

Wholistic Pet Organics Diatomaceous Earth Supplement


Wholistic Diatomaceous Earth is a non-chemical alternative to chemical dewormers. The product contains dried skeletons of microscopic sea creatures called diatoms, which come from fresh water deposits. It can also be used as flea and tick relief.

Key Features:

  • Safe, 100% natural product
  • Made in USA and regulated by the NASC (National Animal Supplement Council)
  • Comes from fresh water deposits

Cost: $16