Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

When Can Kittens Be Dewormed? The Safest Age & FAQ (Vet-Verified)

vet-giving-pill-to-kitten

It’s an exciting time when you bring home an adorable kitten, but there are also less pleasant aspects, including worms!

Not all cats will get worms, but deworming your new pet is still crucial. Young kittens are more susceptible to common worms, which can be fatal if not treated. They can be dewormed as early as 3- 6 weeks old, and the schedule should continue regularly afterward.

In this article, we discuss the importance of deworming your kitten and how to identify the signs of an infection and provide you with a deworming schedule to ensure that your kitten grows up to be a healthy adult cat.

divider cats oct 2024

Kitten Deworming Age

You should consult your veterinarian regarding your kitten’s deworming schedule. Most kittens aren’t given to new owners until they reach 10 to 12 weeks of age, so you should be continuing a deworming schedule that has already started.

The standard deworming timeline is as follows:
  • Deworming at 6 weeks of age (though some start earlier)
  • 8 weeks old
  • Every 3-4 weeks until 6 months old

It’s recommended to deworm outdoor adult cats once a month during the summer season, along with providing heartworm and flea prevention treatments.

Why Do Kittens Need to Be Dewormed So Often?

Frequent deworming is a process that follows the natural life cycle of worms, which typically lasts from 4 to 6 weeks. The worms start as larvae and develop into adults, reproducing and dying within this time frame. Administering deworming medication every 2 and then 4 weeks can eradicate all life cycles of the parasites. Kittens can handle preventative treatments after they reach 6 months of age.

How Are Kittens Dewormed?

Generally, you should have your pet’s deworming done by a veterinarian, or at least prescribed by a veterinarian. The type of medication used will depend on your kitten’s age, weight, and potentially your ability to administer different forms of medication.

divider cats oct 2024

What Kinds of Worms Can Kittens Get?

Roundworms

It’s quite common for kittens to contract roundworms from their mother’s milk. A roundworm infestation can be fatal for kittens and senior cats, though adult cats can generally handle it.

Signs of roundworms in kittens include:
  • Diarrhea
  • Excessive crying and vocalizing
  • Poor growth rate
  • Swollen belly

Hookworms

Kittens that go outside can also be infected with hookworms. They can contract these parasites by walking on contaminated soil and later licking their paws and fur.

Once inside the intestines, the hookworms can cause a range of signs, such as:
  • Anemia
  • Black, tarry stool
  • Unkempt appearance
  • Weight loss

Tapeworms

Tapeworms Close up
Image Credit: Rattiya Thongdumhyu, Shutterstock

Tapeworms spread when fleas ingest tapeworm eggs, so if a kitten has fleas, there’s a chance that they will have tapeworms. One of the main signs that your cat has tapeworms is seeing what looks like white rice on their butt or in their feces. These white bits are tapeworm segments.

divider cats oct 2024

Worms Are Serious Problems for Felines

Worms can pose serious health problems for all cats, but kittens are particularly vulnerable. This is especially true for rescue kittens, as they may already be malnourished, sick, and stressed.

Kittens that are not in good health must be dewormed, or an infestation can be fatal. Depending on the type of worm, a kitten can become anemic or severely dehydrated if they are repeatedly vomiting and experiencing diarrhea.

If they are infested with a large number of worms, this can cause an intestinal blockage, which can be fatal. In some cases, worms can impact a kitten’s overall development and stunt their growth.

Consulting a veterinarian is recommended for the best course of action.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider cats oct 2024

Frequent Asked Questions

Are There Any Side Effects From Deworming?

Side effects from deworming aren’t common, provided that the kitten is receiving the right dose.

Common side effects can include:
  • Vomiting
  • Diarrhea
  • Excessive salivation
  • Decreased appetite

Can Worms Infest Humans?

Allergic woman infront of a black cat
Image Credit: Image Point Fr, Shutterstock

Unfortunately, certain worms can be passed to humans. This should help you stay on top of your pet’s deworming schedule! Although anyone can become infested, children, pregnant people, and immunocompromised individuals are the most susceptible.

Humans can swallow worm eggs, which in some instances can then migrate around and damage various organs, including the lungs and liver.

Do Indoor Kittens and Cats Need Deworming?

Indoor cats are still recommended to be dewormed, however the frequency is less than for outdoor cats. Additionally, it’s easy enough to bring in eggs on our clothing and shoes, which could then infest our indoor cat.

Fleas are also quite capable of hitching a ride on humans and animals. For example, dogs can bring in all kinds of unwanted visitors after their daily walks. Finally, mosquitoes can find their way into our homes, and they can transmit heartworm disease.

While this isn’t a common occurrence, it’s always better to be safe than sorry.

Can We Prevent Worms?

Deworming is the best way to keep your cat free of parasites. You’ll need to ensure that all dogs and cats in the home are dewormed regularly; your vet can help you figure out the frequency. You should use vet-approved monthly flea and heartworm treatments, as these will prevent roundworms and hookworms throughout the year.

Apart from that, it’s also necessary to keep the litter box clean and maintain good hygiene practices. Keeping your cat indoors is highly recommended, as it reduces the risk of worm infestation and protects your cat from predators, injuries from fights, and getting hit by cars.

divider cats oct 2024

Conclusion

Worms are just plain nasty! But by following your vet’s deworming schedule, you can prevent any potential problems in your cat. Along with deworming, your pet should stay up to date with flea and heartworm preventative treatments.

By being diligent and providing the necessary care for your kitten, you can help keep them in the best of health.


Featured Image Credit: Andrew Rafalsky, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Why Does My Cat Growl? Meaning, How You Should React & FAQ (Vet-Verified)

Pet cats are usually friendly and interactive with their human companions. But sometimes, they display aggressive behavior, such as growling. You may be...

Why Is My Cat So Affectionate All of a Sudden? 4 Vet-Reviewed Reasons

We can all agree that receiving affection from our cats is rarely a bad thing. However, if your cat is suddenly affectionate, you...

8 Best No Scratch Sprays for Cats in 2025 – Reviews & Top Picks

One of the most frustrating things a cat can do when you bring home a new piece of furniture or put new carpeting...

American Journey Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary American Journey Pet Food is an exclusive brand owned by Chewy.com. It was first launched in 2017 and sold almost exclusively...

More related

9 Best Shampoos for Sphynx Cats in 2025 – Reviews & Top Picks

Bathing your Sphinx is probably not on your list of favorite activities, but it helps keep your cat’s skin hydrated and healthy. Without...

Yamazaki Airtight Pet Container Review 2025: Our Expert’s Opinion

Yamazaki Home is a brand that creates home goods and housewares that are inspired by Japanese design. Each Yamazaki Home product is designed...

Inbred Cats: Vet-Verified Signs, Ethics, Problems & FAQ

Inbreeding has been, historically, common practice in domesticated animals. Breeders have made a point of breeding closely related animals in order to acquire...

5 Vet-Verified Reasons Why Cats Need a Scratching Post

A scratching post may seem like an unnecessary purchase for your cat, but this cat-friendly item is actually critical for your cat’s comfort,...

Keep reading

What’s the Price of Cat Abscess Treatment? 2025 Costs & FAQ (Vet-Reviewed)

If you own a cat that loves to explore the outdoors and has a high chance of encountering wildlife or other pets, they are more likely to get injured. Cats can be territorial, which means the possibility of a fight...

a vet checking a cat's lymph nodes

Feline Lower Urinary Tract Disease: Our Vet Explains the Causes, Signs & Treatments

Is your cat urinating frequently? Are they going outside of the litter box? These signs may be vague or quite prominent. Your veterinarian might refer to the cause as feline lower urinary tract disease. Let’s look at some of the...

Ginger cat in blue litter box

10 Best Cat Foods Made in the USA in 2025 – Reviews & Top Picks

Choosing high-quality cat food is a hugely important decision when it comes to the health of your beloved pet. You might have been trying to shop more locally for food supplies for your own family, and it makes total sense...

Wet vs Dry Cat Food

Can Cats Eat Fish Bones? Vet-Reviewed Feeding Facts

Cats are obligate carnivores. In the wild, they eat a good variety of small prey, depending on availability, and they make the most of their catch by eating all of their quarry. Prey are usually small mammals and birds, and...

Can Cats Eat Fish Bones

What Is Cat Mirroring? Vet-Reviewed Facts & Why They Do It

Cat mirroring refers to when cats do things in a similar way as humans or other animals in their environment. However, it can sometimes be misinterpreted as a way of cats being able to copy certain behaviors consciously, while it...

bengal cat gives a high-five paw to the owner

Can Cats See Fire? Explaining Feline Vision & FAQ

Cats have long fascinated humans with their enigmatic behaviors and extraordinary senses. We are often told that cats have superior senses compared to us, enabling them to perceive the world in a unique way. One intriguing question that often arises...

Glass Fireplace

How Many Teeth Does a Cat Have? Vet-Approved Facts & Infographic

If you’ve ever watched your cat eat or peered into their mouth, you’ll have noticed their impressive pearly white teeth. Cats have roughly as many teeth as us humans, with kittens sporting 26 deciduous (baby teeth) and adult cats boasting...

Cat-meowing

Does UV Light Kill Fleas on Cats? Vet-Reviewed Effectiveness, Safety & Alternatives

Fleas are pernicious little parasites, and it can be hard to get rid of them on your cat. This fact has given rise to the rumor of UV light killing fleas, but is it true? UV light can technically kill...

Lamp ultra violet