Puppy Deworming Schedule: A Complete Guide for 2025

As a new puppy owner, ensuring your furry friend grows up healthy and free of parasites is a top priority. A key component of puppy preventative care is maintaining a proper deworming schedule to treat and prevent intestinal worms.
While the topic of puppy parasites isn‘t the most pleasant, understanding the importance of deworming and staying on top of treatments is essential for every dog owner. Puppy worms are extremely common, but also very treatable. With the right knowledge and a consistent deworming schedule, you can keep your pup parasite-free.
In this comprehensive guide, we‘ll cover everything you need to know about puppy deworming in 2024, including:
- Why puppies need to be dewormed
- How puppies get worms
- A typical puppy deworming schedule
- Identifying worms in puppies
- Deworming treatment options
- Preventing worms in puppies
- When to consult your vet
By the end of this article, you‘ll be equipped with the most up-to-date knowledge to keep your puppy worm-free and develop a deworming plan with your veterinarian. Let‘s dive in!
Why Do Puppies Need to Be Dewormed?
Deworming is a crucial part of raising a healthy puppy. Virtually all puppies are born with intestinal parasites or worms, which are passed from the mother dog before birth or through nursing. In addition, puppies can easily pick up worms from their environment.
Worms rob your growing puppy of vital nutrients needed for proper development. In severe cases, intestinal parasites can lead to:
- Poor growth and weight loss
- Weakness
- Anemia
- Intestinal blockages
- Pneumonia (from migrating worm larvae)
- Death, in extreme worm infestations
Some worms, like roundworms and hookworms, are zoonotic – meaning they can be transmitted from puppies to humans. Children are especially at risk for contracting worms from puppies due to lower hygiene standards.
For all of these reasons, beginning deworming treatments early and maintaining a consistent schedule is essential for your pup‘s health (and your family‘s).

Puppy Deworming Schedule
Most puppies should begin receiving deworming medications at 2 weeks of age, with repeated treatments every 2 weeks until 12 weeks old. A typical puppy deworming schedule looks like this:
- 2 weeks old (before adoption)
- 4 weeks old
- 6 weeks old
- 8 weeks old (typical adoption age)
- 10 weeks old
- 12 weeks old
Once your puppy reaches 12 weeks, they can transition to a monthly dewormer until 6 months of age. After 6 months, your vet can determine an appropriate deworming schedule based on your dog‘s risk factors, such as their living environment and lifestyle.
While this is a typical schedule, your vet may recommend beginning deworming even earlier or extending treatment past 12 weeks if your puppy has a severe worm infestation or other health concerns. Always consult with your vet and follow their specific deworming protocol for your pup.
Pregnant and nursing dogs should also be dewormed to reduce transmission of worms to puppies. Your vet can recommend a safe dewormer for expecting/new mother dogs.
How Do Puppies Get Worms?
Puppies most commonly contract worms from their mothers. Many worms can cross through the placenta to infect puppies before birth. Worm larvae can also be passed through the mother‘s milk to nursing puppies.
Additionally, puppies are at high risk for picking up worms from their environment, including:
- Other infected dogs or animals
- Worm eggs/larvae in soil or grass
- Eating prey animals (rodents, birds) that carry worms
- Ingesting fleas that contain tapeworm larvae
- Sniffing or licking contaminated feces
Puppies explore the world with their mouths, so they are constantly being exposed to potential sources of worms. Their immature immune systems also make them more susceptible to parasites compared to adult dogs. This is why early and frequent deworming is a must for puppies.
Common Worms in Puppies

The most common intestinal worms seen in puppies include:
- Roundworms: Spaghetti-like worms that can grow up to 5 inches long. Extremely common in puppies.
- Hookworms: Small, thin worms that attach to the puppy‘s intestinal wall and feed on blood. Can cause severe anemia.
- Whipworms: Threadlike worms that bury their heads into the large intestine lining. Eggs are very hardy in the environment.
- Tapeworms: Long, flat, segmented worms that can grow up to 8 inches. Puppies usually get them from ingesting fleas.
- Coccidia/Giardia: Single-celled protozoan parasites that infect the intestinal tract and cause diarrhea, especially in young puppies.
Puppies can be infected with multiple types of worms at once. Different worms require different deworming medications, so identifying which parasites your pup has is important for effective treatment.
Signs Your Puppy Has Worms
Sometimes you may actually see worms in your puppy‘s stool or vomit, but this isn‘t always the case. Other signs that your puppy may have a parasite problem include:
- Diarrhea (may contain blood or mucus)
- Vomiting
- Potbellied appearance
- Poor growth/inability to gain weight
- Lethargy/weakness
- Pale gums (anemia)
- Itching/rubbing bottom on ground
- Cough (from worm larvae migrating through lungs)
However, some puppies may be infected with worms without showing any obvious symptoms. This is why routine deworming is important even if your pup appears healthy. A fecal exam by your vet can detect worm eggs that may be missed by the naked eye.
Puppy Deworming Treatments

There are several common deworming medications for puppies, which may be oral liquids, tablets/chewables, or topical spot-on products. Some popular brands include:
- Pyrantel pamoate (Nemex, Strongid)
- Fenbendazole (Panacur)
- Praziquantel (Droncit)
- Selamectin (Revolution)
- Milbemycin oxime (Interceptor)
Combination products that target multiple worms are also available. Prescription dewormers from your vet tend to be most effective, but some over-the-counter options exist too. Your vet can recommend the best dewormer for your pup based on their specific needs.
Be sure to administer the full course of any prescribed dewormer, even if worms are no longer visible in stool. Recheck fecal exams are also important to ensure the infestation has been cleared. Never give your puppy a dewormer intended for another animal, as the dosage may be incorrect and could make your pup sick.
Preventing Worms in Puppies
In addition to a regular deworming program, there are several steps owners can take to reduce their puppy‘s exposure to worms:
- Keep your yard clean and promptly disposed of dog feces
- Prevent your pup from eating animal feces or dead animals/prey
- Use a monthly flea/tick preventative to avoid tapeworms
- Don‘t let your puppy explore potentially contaminated environments (e.g. dog parks) until fully vaccinated and dewormed
- Practice good hygiene and always wash hands after handling your pup or their stool
Worms are inevitable for most puppies, but diligent prevention can greatly reduce parasite problems as your pup grows up.
Frequently Asked Questions
How long does it take for worms to die after deworming?
Most dewormers start working within a few hours of administration. In many cases, worms will be passed in stool within 24 hours after the deworming medication is given. However, it may take up to 1-2 weeks to completely clear the infestation. A fecal test can confirm successful treatment.
Are puppy dewormers safe?
When given at the correct dosage, puppy dewormers are generally very safe and well-tolerated. Some mild GI upset like vomiting or diarrhea can occur, but side effects are uncommon. However, collies and related breeds may be sensitive to certain ingredients. Always follow your vet‘s dosage instructions and report any adverse reactions.
Can I deworm my puppy naturally?
Some natural remedies are touted for treating worms, such as pumpkin seeds, apple cider vinegar, carrots, and probiotics. While these may offer some benefits for digestive health, there is little evidence they are effective for fully eliminating worms. Prescription medications are a safer, more reliable treatment. Consult your vet before giving your pup any natural dewormers.
Can I get worms from my puppy?
Yes, roundworms and hookworms are zoonotic, meaning they can infect humans (especially children). Accidentally ingesting eggs from contaminated soil or feces is the most common transmission method. Regularly deworming your pup, promptly cleaning up after them, and practicing good hygiene greatly reduces the risk to humans.
When to Consult Your Vet
As a puppy owner, working with your vet to establish a deworming protocol is essential. While you can administer some dewormers yourself at home, never try to diagnose or treat your puppy without guidance from a professional.
Bring your new puppy in for an initial vet visit as soon as possible (ideally within a few days of bringing them home). The vet can assess your pup‘s overall health, check for worms, and prescribe an appropriate dewormer if needed. They can also ensure you are using the proper dose for your pup‘s weight.
Seek veterinary care if your puppy has any severe worm symptoms, such as debilitating diarrhea, vomiting, extreme lethargy, or anemia. Worms are a very treatable problem in puppies, but they can escalate to dangerous levels if left untreated.
The Bottom Line
Worms are an unfortunate but common reality for most puppies. With a strategic deworming regimen and a little education, you can set your new furry friend up for a healthy, parasite-free life.
Use this guide to work with your vet and develop the best deworming schedule for your unique pup. A little prevention and some well-timed treatments can avoid a lot of unpleasant health problems down the road.
Remember, there is no one-size-fits-all deworming protocol for puppies. Your puppy‘s lifestyle, risk factors, and health status all influence the ideal schedule. When in doubt, always consult your vet for a personalized recommendation.
With a proactive approach and a trusted vet in your corner, you‘ll have your puppy worm-free in no time. Now you can focus on the joyful journey of puppy parenthood ahead!