Worming Schedule for Puppies, Dogs, Kittens and Cats

Key Takeaways

• Puppies and kittens should be dewormed every two weeks from two to eight weeks, then monthly until six months, following CAPC guidelines. After six months, begin adult protocols and use a heartworm preventive that also covers hookworms and roundworms.
• Adult dogs and cats require regular deworming based on their parasite exposure, and breeding females should be treated before mating, at birthing and while nursing.
• Newly acquired pets should be dewormed immediately, again in two weeks and then placed on the standard schedule.
• Over-the-counter options such as Nemex-2 for dogs and Drontal Tablets for cats treat common worms, while prescription products like Droncit, Panacur and Drontal Plus offer broader protection.
• Flea control is essential because fleas transmit tapeworms, and both the pet and environment must be treated to break the cycle.

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Intestinal worms are a common health concern in puppies and kittens. Hookworms and roundworms are among the parasites most often found in young pets and can cause poor growth, anemia, and digestive problems if left untreated.

Following a consistent deworming schedule helps protect your dog or cat against intestinal parasites. This guide covers deworming recommendations for puppies, kittens, adult dogs and cats, and senior pets, along with common treatment options.

Deworming Schedule for Puppies and Kittens

Life Stage	Age	General Deworming Approach
Puppies and Kittens	2-8 weeks	Every 2 weeks
Growing puppies and kittens	2-6 months	Monthly
Adult dogs and cats	6 months and older	Year-round parasite prevention
Adults without monthly prevention	6 months and older	Risk-based deworming and fecal testing
Senior pets	Varies	Continue age-appropriate prevention

 

Puppies: Start deworming at 2 weeks of age. Continue deworming every 2 weeks through 8 weeks, then monthly until 6 months of age. Watch for a sudden pot belly, poor weight gain, or diarrhea. 

Kittens: Start deworming at 2 weeks of age. Continue deworming every 2 weeks through 8 weeks, then monthly until 6 months of age. Kittens can acquire roundworms through their mother's milk, while fleas can increase the risk of tapeworm infections. Watch for a pot belly, poor weight gain, or diarrhea.

Adult Dogs: Year-round parasite prevention is recommended to help protect against common intestinal worms and other parasites. Dogs that hunt, scavenge, or frequently visit dog parks may face increased exposure. Your veterinarian can recommend a prevention and fecal testing schedule based on your dog's risk.

Adult Cats: Both indoor and outdoor cats can be exposed to intestinal parasites, although outdoor cats generally face a higher risk. Cats that hunt rodents may also be exposed to roundworms and tapeworms. Work with your veterinarian to determine an appropriate year-round prevention program.

Deworming Guidelines for Adult and Newly Acquired Pets

For adult dogs and cats, CAPC's preferred approach is simple: keep every pet on a monthly, broad-spectrum parasite preventive year-round, covering heartworm, intestinal parasites, fleas, and ticks. If a monthly product isn't realistic for your pet, the fallback recommendation is to deworm at least four times a year, along with fecal exams two to four times a year to catch anything in between.

Breeding females need a bit of extra attention. Many vets recommend keeping pregnant and nursing dogs and cats on parasite control throughout pregnancy and lactation, since certain worms can pass to puppies and kittens before or shortly after birth. Not every dewormer is labeled safe for pregnant animals, though, so this is one to confirm with your veterinarian rather than treat on your own.

For newly acquired pets, ask the previous owner or shelter for vaccination and deworming records. Schedule a veterinary visit to discuss fecal testing, parasite treatment, and an appropriate prevention schedule based on your pet's age and health history.

Fecal Testing vs. Routine Prevention

Fecal testing and routine deworming both play important roles in protecting your pet from intestinal parasites. A fecal test checks a stool sample for parasite eggs, helping your veterinarian identify certain intestinal worms. However, fecal tests may not detect immature worms that are not yet producing eggs or tapeworm infections, since tapeworm segments and eggs are shed intermittently.

Routine broad-spectrum parasite prevention helps protect most pets against common intestinal worms. Fecal testing is useful for diagnosing suspected infections, checking newly adopted pets, evaluating pets showing symptoms, and monitoring pets that are not receiving monthly parasite prevention. Your veterinarian can help determine the best testing and prevention schedule for your pet.

Fecal Testing	Routine Prevention
Detects intestinal parasite infections Examines a stool sample for parasite eggs Best for new pets, pets with symptoms, and routine parasite screening May miss immature worms or parasites that shed eggs intermittently Based on age, health, and veterinarian recommendations	Treats or helps prevent intestinal parasite infections Uses deworming medication to target specific parasites Best for ongoing parasite control based on your pet's needs and risk Does not treat every type of parasite; coverage varies by product Based on product instructions and veterinarian recommendations

Remember, a fecal test does not replace routine prevention. Schedule a veterinary visit for a diagnosis and to determine the best prevention routine for your pet.

Choosing a Dewormer: Over-the-Counter and Prescription Options

Several effective dewormers are available without a prescription. Nemex-2 treats roundworms and hookworms in dogs. Drontal Tablets for Cats covers tapeworms, roundworms, and hookworms in cats and kittens. Safe-Guard Canine Dewormer is another non-prescription option, treating roundworms, hookworms, whipworms, and tapeworms in dogs over 6 weeks old. It's still worth having your vet confirm which parasites your pet is actually dealing with before you pick a product, since not every dewormer treats every type of worm.

Several prescription options cover a broader range of parasites. Droncit Canine targets tapeworms specifically. Panacur Granules treats roundworms, hookworms, whipworms, and tapeworms in dogs. Drontal Plus Taste Tabs and Drontal Plus Tablets for dogs cover that same broad range in a chewable or tablet form. Your veterinarian can recommend the best fit based on your pet's age, weight, and health history. This is only a partial list of the dewormers available for dogs and cats.

One safety note: some of these same active ingredients also show up in dewormers made for horses and livestock. Never substitute a livestock dewormer for a product labeled for dogs or cats. Livestock formulas are far more concentrated and can cause a dangerous overdose in a pet.

Don't Forget Fleas

Treating intestinal worms is only part of parasite control. Fleas can transmit tapeworms when dogs or cats swallow infected fleas during grooming. Consistent flea prevention and treating an existing flea infestation in your pet's environment can help break the cycle. Read our Flea Control for Dogs and Cats guide for additional tips.

Which worms does each dewormer treat?

Product	Active Ingredients	Rx Status	Roundworms	Hookworms	Tapeworms	Whipworms
Nemex-2 (Dogs)	Pyrantel	OTC	Yes	Yes	No	No
Drontal Tablets for Cats	Praziquantel + pyrantel	OTC	Yes	Yes	Yes	Not labeled
Safe-Guard Canine	Fenbendazole	OTC	Yes	Yes	Yes (Taenia only)	Yes
Droncit Canine	Praziquantel	Rx	No	No	Yes	No
Panacur Granules	Fenbendazole	Rx	Yes	Yes	Yes (Taenia only)	Yes
Drontal Plus (Taste Tabs and Tablets)	Praziquantel + pyrantel + febentel	Rx	Yes	Yes	Yes	Yes

*Tapeworm coverage varies by species. Flea tapeworm (Dipylidium) requires praziquantel. Fenbendazole products cover Taenia tapeworms but not flea tapeworms, which are the most common type found in pets.

Keeping your dog or cat on a consistent parasite prevention schedule helps protect their health at every life stage. Work with your veterinarian to determine the right deworming and fecal testing routine, and explore our dog and cat dewormers for available treatment options.

Frequently Asked Questions

How often should adult dogs be dewormed?

Adult dogs on a year-round broad-spectrum preventive are effectively dewormed every month. If your dog isn't on a monthly product, most vets recommend deworming at least four times a year, along with fecal exams two to four times a year to check for parasites in between.

Can I deworm my pet myself at home?

Yes. Dewormers like Drontal Tablets for Cats or Safe-Guard Canine are available without a prescription and can be given at home. It's still worth having your vet confirm which parasites your pet is dealing with first, since not every dewormer treats every type of worm.

Do indoor cats need to be dewormed?

Yes. Indoor cats can still pick up worms from fleas, insects, rodents, or eggs tracked in on shoes and other pets. Roundworms can also pass from a mother cat to her kittens regardless of whether she goes outside, so indoor cats still need regular parasite control.

What if I miss a deworming dose?

If you miss a deworming dose, give it as soon as you remember, then return to the normal schedule. If more than a few weeks have passed or if your pet is young, contact your veterinarian, as a missed dose can leave your puppy or kitten exposed.

What are signs my puppy has worms?

Common signs include a pot-bellied appearance, poor weight gain, a dull coat, diarrhea, vomiting, and visible worms or rice-like segments in the stool. Some puppies with a heavy worm burden show no obvious symptoms at all, which is exactly why sticking to a regular deworming schedule matters even when a puppy looks healthy.

How long after deworming will I see worms in the stool?

You may notice worms in your pet's stool within 24 to 48 hours after deworming, although the timing can vary depending on the type of worms and dewormer used. Not all worms will be visible in the stool, so the absence of visible worms does not necessarily mean the treatment was ineffective.

Is it safe to deworm a pregnant dog or cat?

Many vets recommend keeping pregnant and nursing dogs and cats on parasite control, since certain worms can pass to puppies and kittens before or shortly after birth. Not every dewormer is labeled safe during pregnancy though, so this is one to confirm with your veterinarian rather than treat on your own.

Can humans get worms from pets?

Yes, hookworms and roundworms in particular can spread to people, usually through contact with contaminated soil or pet waste. Children are at higher risk since they're more likely to put their hands in their mouths after contact with soil or a sandbox. Regular deworming, prompt cleanup of pet waste, and handwashing are the best ways to lower that risk.

What should I do if I adopt a puppy, kitten, or adult pet with an unknown health history?

For newly adopted pets, deworm right away and repeat in two weeks, following your veterinarian's guidance. If possible, ask the previous owners for any available health records. Schedule a veterinary visit within the first week or two to discuss a deworming schedule and have a fecal test performed. Keep your new pet separated from other pets in your household and avoid shared spaces until your veterinarian advises otherwise. For more information about caring for a new pet, check out our articles for New Dog Owners or New Cat Owners.

What's the difference between over-the-counter and prescription dewormers?

Over-the-counter dewormers, like Nemex-2 or Safe-Guard, typically treat a narrower set of parasites, such as roundworms and hookworms. Prescription dewormers, like Drontal Plus or Panacur, often cover a broader range, including tapeworms and whipworms, and your vet can help match the product to what your pet actually has.

Sources: Companion Animal Parasite Council (capcvet.org), and Valley Vet Supply's current dewormer catalog.

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