Last updated: September 5, 2021

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Dogs are faithful pets that need their owners to love and care for them. On certain occasions, you may neglect the health of your pet, believing that nothing will affect them. However, animals also get sick and can be infected by parasites, both internally and externally.

It is essential that your dog always remains free of harmful parasites. As their owner, you are responsible for their diet and nutrition. Remember that the intestinal system is what suffers the most during an infection. There are currently pills for deworming dogs, which can significantly improve your pet's health. In this article, we have put together a guide to give you all the information you need and help you choose the best dog dewormer on the market today.

Key Facts

  • Dog deworming pills are a very effective treatment to eliminate worms, larvae, and eggs. They also fight fleas and ticks! They are administered orally every 6 months, approximately. The frequency can vary depending on the manufacturer.
  • There are two types of deworming pills: for internal and external parasites. You can also buy them in two formats, natural and commercial. Every dog needs different products to suit their needs.
  • To choose the right product, you must take into account the breed and age of the dog and also the severity of the problem. In the "shopping criteria" section, we will talk about this in more detail.

Our Selection of the Best Dog Dewormers

Imagine that you need to take medication. You would choose one that is the best quality, and one that is certified and effective. The same goes for canine medicines, so you want to be sure that your dog gets the best treatment. For this reason, we have put together a list of the best deworming pills available on the market today for your dog.

Shopping Guide: Everything You Should Know About Dog Dewormers

Before buying, it is important to know a few things about dog dewormers. Each dog has different needs, and will benefit from different products. In this section, we have put together a shopping guide to answer your most frequently asked questions about dog dewormers. This will help you make the best decision when purchasing a treatment for your pet.

Woman with her pet

To choose the right medicine, you need to take into account the breed and age of your pet.
(Source: Trendsetter Images: 40899201/

What are dog worming pills and what benefits do they have?

Dog dewormers are pills used to eliminate harmful internal parasites in your pet, including worms and tapeworms that negatively affect your dog's intestinal system. By using these pills, you can prevent your dog from suffering from diarrhea, bloating, or gas.

On the other hand, there are also pills to get rid of external parasites, such as fleas and ticks. In both cases, the treatment is administered orally and the doses vary depending on your dog's size, breed, and severity of the problem. However, you should always consult your veterinarian before giving your dog any type of treatment.

Regarding its use and effectiveness, there are several different options available that are suitable for different types of dog owners. We recommend you take into consideration the advantages and disadvantages of deworming pills.  The following table shows you each characteristic of deworming pills:

  • Quickly eliminates internal and external parasites.
  • They are economical
  • You only need one dose
  • The administration is simple
  • Some dogs can suffer allergic reactions
  • They may not work for all dogs (especially if the problem is serious)

Are deworming pills safe?

Deworming pills for dogs are safe as long as they are administered correctly. Firstly, we do not recommend you treat your dog without consulting your veterinarian. You should also make sure to give your dog the correct dose to avoid poisoning your pet.

Keep in mind that your dog may be allergic to some substances, so you should always look at the product's ingredients.There are also natural and chemical tablets as well, and the natural ones are generally safer.

It is essential that you read the instructions, and choose the right product for your pet.

What types of deworming pills exist on the market?

It is essential to know what types of products are out there on the market. Not all will be effective for your pet, as they are all manufactured to meet different needs. For example, a poodle will need a less strong treatment compared to a rottweiler. In the same way, very basic tablets will not be effective for a mastiff, for example.

Therefore, you need to determine which product your pet needs and how it will benefit them. This way, you can make the best decision and avoid making a mistake that could harm your dog. For this reason, we have developed this table to give you all the information you need regarding the different types of dog deworming pills.

Type of pill Characteristics Uses
For internal parasites Eliminates worms and larvae.

Effective against nematodes (worms that cause trichinosis, among other diseases).

Eliminates worm eggs.


Adult dogs.

For external parasites Combats fleas and ticks.

Effective against ticks.


Young dogs.

Natural Manufactured from natural ingredients.

They exist both for internal and external parasites.

Chemical Made with chemical additives.

They have powerful effects

Only to be used when natural versions are ineffective.

They can be consumed by young, strong, and large dogs.

How do deworming pills work?

The active ingredients in dog deworming pills work in the digestive system, where it is absorbed and passed into the pet's bloodstream. Little by little, it is distributed throughout the body until it reaches the parasites. Most products manage to break the life cycle of these organisms, preventing them from laying more eggs.

These pills act very quickly. Some studies have shown that, after half an hour, more than 50% of the parasites are eliminated. In more serious cases, the parasites will be eliminated within 8 hours. These products will not only kill parasites, but will prevent them from appearing again.

How often do I need to give my pet deworming pills?

The frequency of using deworming pills directly depends on the age and health of your pet. As a general rule, the treatment must be given to adult dogs 2-3 times per year. If you have a dog that gets sick often, you could treat him every 3 months. You should also take into account the specific pills that you are giving your dog and what is recommended on the packaging.

On the other hand, if the effective time on the product has passed and your dog has not had any parasites, do not postpone the treatment as an alternative. It does not matter if your pet is healthy, as the medicine will still act as a preventative. Either way, we emphasize again that you consult your vet for your dog's specific needs.

Dog in garden

There are two types of pills to deworm your pet: internal or external, the one you buy will depend on the use you need.
(Source: Vitplus: 50684236/

From what age can I give my puppy deworming pills?

This is a topic that generates many questions, since puppies are very delicate and sensitive. These characteristics make them prone to develop parasites, but also suffer negative reactions to pills. Therefore, many people have questions when it comes to how they should keep their puppies protected.

Deworming pills should be given to puppies during their first weeks of life. However, you cannot treat them directly after birth because they are not fully developed. The best thing to do is wait until they are 15 to 21 days old, and after consuming a professional.

What types of parasites do deworming pills work on?

There are a wide range of parasites, both internal and external, that can affect the health of your pets. Each has different effects for your pet, causing them to suffer different diseases. Some can damage the stomach, liver, and pancreas. Depending on the type of organism, you will need to choose the right medicine.

There are also pests that can infect your dog's skin and fur. Therefore, it is essential to know the type of parasite so that you can choose the most effective product to solve the problem. In the next section, we have put together a table with the characteristics of the most common parasites.

Type of parasite Characteristics Effects
Flea Very common external parasite.

Lays eggs to spread and multiply.

It can hide anywhere and attach to your dog.

They bite the pet to feed on its blood.

Causes a lot of itching and allergic reactions, and can sometimes be very painful.

In more severe cases, it can cause anemia.

Tick They pierce the dog's skin.

They suck the dog's blood

Causes irritations that can be very painful.

Transmits very dangerous infections.

Ascaris It is a roundworm.

Mainly infects puppies.

It can be transmitted by genetics.

Swollen belly.



Respiratory problems.

Hookworm Round worm with hooks.

They attach to the lining of the abdominal wall.

The dog's stools will be infected.

Internal hemorrhages.

Lethal to puppies.

Immitis Dirofilaria Also known as heart worm.

It is transmitted through mosquitoes.

Stays in the heart and blood vessels.

It can reach up to 30 centimeters long.

Affects the bloodstream

Causes heart and lung failure.

Trichurids Also called "whip worm"

It lives between the small and large intestine.

It feeds on blood

Bloody diarrhea.

In serious cases, it can be fatal.

Shopping Criteria

You have decided that it is time to purchase dog deworming pills. You need to choose carefully, because you do not want to choose the wrong product for your dog. As mentioned earlier, each dog has different characteristics and needs. In this section, we have put together some information about the different criteria that you should take into account when purchasing this product.

Dog Breed

We have stressed that each dog breed is affected differently by parasites, both internal and external. The larger the pet, the more it can be harmed, especially by ticks and fleas. Some breeds are also more likely to suffer from worms or larvae.

In contrast, hairier dogs, such as chow chows, are more vulnerable to external parasites such as fleas and ticks. In any case, you must choose the right product and make sure to read the instructions to know what is best for your pet. And of course, consult your veterinarian before giving anything to your pet.

Woman with her dog

Pills are very effective to deworm your pet.
(Source: Georgerudy: 44334360/


You should pay attention to two specific ages: puppies and older dogs. These are the stages when your pet is most vulnerable to infections and parasites because their bodies do not have enough antibodies to deal with some diseases. Therefore, you may need a stronger medicine to treat them.

However, younger dogs are not so easily infected if you have fed and taken care of them properly. In this case, a preventative treatment is recommended every 6 months. If you give them the medicine throughout their life, they are less likely to get infected in adulthood.

Product Type

As we explained in the previous table, there are two types of pills for deworming dogs. Firstly, there are pills to eliminate internal parasites, such as worms and larvae that harm your pet's digestive tract. There are also tablets to fight fleas, ticks, and other external parasites.

Keep in mind that products are not interchangeable, therefore you need to find the right one for your pet. If you pet is infected with both internal and external parasites at the same time, do not rush to give them both pills simultaneously. Check with the vet to confirm the best way to help your dog.

There are other types of treatments, such as medicine droppers and flea collars.

Parasite Severity

The severity of the infection is directly related to the type of product that can be used. Obviously, the more complicated the problem, the more powerful medicine you will need. You may also have to vary and even increase the frequency of treatment.


Parasites are a very common problem for dogs, and can affect them both internally and externally. However, the problem is easily solved if you use the right medicine to combat harmful organisms. They are very beneficial products, which help to prevent different types of diseases.

It is a great idea to give deworming pills to your furry friends. Choose the right product for your dog and make sure to read the instructions and follow your vet's orders. Of course, it is always important to care for your dog property and feed them well to prevent infections and help them live a long and happy life.

We hope you enjoyed our article and have all the information you need about deworming your dog. Don't forget to leave a comment below and share this article on social media. See you next time!

(Source of Featured Image: Mikkel Bigandt: 30980522/