Welcoming a new puppy into your home is an exciting time filled with joy and anticipation. As a responsible pet owner, it’s crucial to prioritize your puppy’s health from the moment they arrive. One essential aspect of puppy care that is often overlooked is deworming. Deworming is a preventive measure to protect your puppy from potentially harmful parasites affecting their health and well-being. This comprehensive guide will explore when to deworm puppies, why it’s essential, and how to do it safely and effectively.

Worms and Their Impact on Puppies

Before diving into the specifics of when to deworm puppies, it’s essential to understand the potential dangers that worms pose to young dogs. Puppies are particularly vulnerable to intestinal parasites such as roundworms, hookworms, whipworms, and tapeworms. These parasites can be transmitted through various means, including ingesting contaminated soil, water, infected feces, and their mother’s milk.

Once inside a puppy’s body, worms can wreak havoc on their health in several ways. They can cause gastrointestinal issues such as diarrhea, vomiting, and abdominal discomfort. In severe cases, worm infestations can lead to stunted growth, anemia, and even death, especially in young or immunocompromised puppies.

When to Start Deworming Puppies

The timing of the first deworming treatment for puppies is crucial. Puppies are often born with or acquire worms shortly after birth, either from their mother or the environment. Therefore, it’s recommended to begin deworming puppies early in life. Most veterinarians suggest starting deworming protocols when the puppy is between two and three weeks old. The mother’s immunity begins to wane at this age and the risk of worm infestation increases. When to deworm puppies?

The exact schedule for deworming may vary depending on your veterinarian’s specific recommendations and the risk factors present in your puppy’s environment. In general, puppies should be dewormed every two to three weeks until they are around three months old. After that, the deworming frequency can be reduced to once a month until the puppy reaches six months of age. However, it’s essential to consult your vet to determine the best deworming schedule for your puppy based on their needs and circumstances.

Monthly Heartworm Prevention

Once the first round of deworming is finished at 10 weeks, it’s time to switch to a monthly heartworm prevention program. Your puppy will be protected from several parasites by following this routine. Heartworm medicine once a month is not just advised; it is an essential part of your dog’s long-term care regimen.

Heartworm disease is a dangerous and sometimes lethal illness brought on by parasitic worms that are spread by mosquito bites. Without treatment, these worms can proliferate and dwell in the blood vessels, heart, and lungs, leading to lung illness and serious heart failure. When to deworm puppies?

It is impossible to exaggerate the significance of routine deworming. Even if many intestinal parasites are addressed during the early deworming sessions, continuous protection is required.

Monthly preventatives usually protect against common intestinal worms, such as roundworms and hookworms, in addition to heartworms. Because some of these parasites may spread to people, these worms may be dangerous for your family and your dog.

Signs That Your Puppy Needs Deworming

While following a deworming schedule is crucial for preventing parasite infestations, it’s also essential to be vigilant for signs that your puppy may need additional deworming treatments between scheduled doses. Some common signs that your puppy may have worms include:

Visible Worms

In some cases, you may be able to see worms in your puppy’s stool or vomit. These may appear as small, white, or brownish segments (in the case of tapeworms) or as long, spaghetti-like strands (in the case of roundworms).

Gastrointestinal Symptoms

Worm infestations can cause symptoms such as diarrhea, vomiting, bloating, and abdominal discomfort. If your puppy is experiencing any of these symptoms, it’s essential to consult with your vet to determine the underlying cause and appropriate treatment. When to deworm puppies?

Poor Growth or Development

Worms can impair a puppy’s ability to absorb nutrients from their food, leading to poor growth or development. If your puppy is not gaining weight or growing at the expected rate, it could signify a worm infestation.

Visible Signs of Anemia

In severe cases, worm infestations can lead to anemia, manifesting as pale gums, weakness, lethargy, and fainting. If you observe any of these symptoms in your puppy, seek veterinary care immediately. When to deworm puppies?

Recognizing Deworming Side Effects


It is crucial to watch for any indications of negative responses in your dog while giving them deworming medicine. Side effects are rare but can still happen. They are usually minor. Knowing the typical adverse effects of deworming will enable you to act quickly if your pet becomes unwell.

Here’s what you might notice:

Vomiting: This is a typical reaction; unless it worsens or lingers, it normally isn’t cause for concern.

Diarrhea: Your dog could go through this as the parasites leave their system.

Lethargy: Your puppy might be less playful and seem tired for a day or two.

Deworming Methods and Products

Several methods and products are available for deworming puppies, including oral medications, topical treatments, and injectable formulations. The most common method is oral deworming medications, which are typically administered in the form of tablets or liquids.

When choosing a deworming product for your puppy, selecting one that is safe, effective, and appropriate for their age, weight, and specific type of worms is essential. Your veterinarian can help you determine the most suitable deworming product for your puppy and provide guidance on proper administration and dosage.

It’s crucial to carefully follow the instructions provided by your veterinarian or the product manufacturer when deworming your puppy to ensure optimal effectiveness and safety. Overdosing, or underdosing can lead to treatment failure or adverse effects. Hence, using the correct dosage and administering the medication as directed is essential.

Deworming Adult Dogs

Your puppies’ deworming program should be modified as they mature into adult dogs. Adult dogs often only need deworming treatments once; however, pups in their early months must be treated frequently. They are still vulnerable to common parasites, including whipworms, roundworms, hookworms, and tapeworms.

Depending on your dog’s lifestyle and the advice provided by your veterinarian, the frequency of your dog’s deworming as an adult may usually be lowered to once every three to six months.

Your dog may need more frequent deworming if they spend much time outside or in contact with other animals. They may also be more susceptible to parasites.

It’s critical to watch for infestation symptoms, including diarrhea, a dull coat, weight loss, and visible worms in their feces. Call your veterinarian if you observe any of these symptoms as soon as possible. They’ll advise a fecal investigation to pinpoint the precise parasites and provide a suitable course of action.


Deworming is a critical aspect of puppy care that should be noticed. Following a deworming schedule recommended by your veterinarian and being vigilant for signs of worm infestations can help protect your puppy from the potential dangers posed by intestinal parasites. 

Remember to consult your vet for personalized advice and guidance on deworming protocols and products best suited to your puppy’s needs. By prioritizing your puppy’s health and well-being, you can set them on the path to a happy, healthy life as a beloved family member.


At what age should I start deworming my puppy?

If you have a new puppy, knowing they can be born with or get worms shortly after birth is important. It can be a serious problem if left untreated, so it’s generally recommended to start deworming puppies between two and three weeks of age. By doing so, you can help prevent worms from causing harm to your furry friend.

How often should I deworm my puppy?

Puppies should be dewormed every two to three weeks until they are around three months old. After that, the deworming frequency can be reduced to once a month until the puppy reaches six months of age. However, the specific deworming schedule may vary based on your veterinarian’s recommendations and your puppy’s needs.

Can I prevent worm infestations in my puppy without deworming?

While deworming is an essential preventive measure, you can also take other steps to reduce your puppy’s risk of worm infestations. These include practicing good hygiene, such as cleaning up feces promptly, keeping your puppy’s living environment clean and sanitary, and avoiding contact with potentially contaminated soil or water sources.

Can I deworm my puppy myself, or should I see a veterinarian?

While over-the-counter deworming products are available, it’s generally recommended to consult your veterinarian before deworming your puppy. Your vet can provide personalized advice on deworming protocols and recommend the most suitable products based on your puppy’s age, weight, and specific needs.