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DOSSIER | Deworming: Protecting your pets against worms

Christelle de Produits-Veto

Pharmacy technician ·

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Dewormer for animals is a medication designed to eliminate internal parasites, such as worms, which can infest pets like dogs, cats, horses and exotic pets.

Why Deworm Your Animals: An Essential Guide

Deworming is crucial for the health of your pets. Internal parasites, such as worms, can cause serious problems. Regularly deworming your dogs, cats, horses and exotic pets helps prevent these risks. In this article, discover the key times to deworm your animals, the different methods available, and how to choose the solution best suited to ensure their well-being.

Fur or feathers, there is a solution for everyone

What is dewormer for animals?

These parasites can cause various health problems, ranging from digestive disorders to more serious illnesses. The dewormer helps maintain health and well-being in animals by eliminating these parasites.

The importance of dewormer for animals

Internal parasites harm animals' health: weight loss, dull coat, vomiting, diarrhoea, lethargy. Regular deworming protects them effectively, contributing to their overall well-being.

When should you deworm your animals?

The frequency of deworming depends on several factors, including the animal's age, lifestyle and environment. Here are some general recommendations:

Puppy & Kitten

Every 15 days until the age of 2 to 3 months, then once a month until six months.

Dog & Cat

Every 3 months for animals with outdoor access.

Every 2 months if there are young children in the household.

Farm animals

The frequency varies depending on the species and living conditions, but generally at least twice a year.

How do you know if your animals need dewormer?

Several signs can indicate that an animal needs dewormer:

  • Presence of worms in the stool or vomit
  • Unexplained weight loss
  • Dull coat lacking shine
  • Frequent diarrhoea or vomiting
  • Changes in behaviour, such as lethargy


A veterinary diagnosis is always recommended to confirm the presence of parasites and choose the appropriate treatment.

What is the best dewormer?

The best dewormer depends on the animal and the types of parasites to be treated. There are several categories of dewormers:

  • Broad-spectrum dewormers: Effective against a variety of worms.
  • Specific dewormers: Target specific types of parasites.

Your veterinarian can advise you on the dewormer best suited to your animal based on its specific needs.

Still have questions about deworming (FAQ)?

Still have questions about deworming your animals? Take a look at a short additional FAQ (Frequently Asked Questions) to help frame the topic. If you would still like to contact us about this topic, or would like to add to this FAQ, send us a message through our contact form.

Yes, some dewormers cause dead or paralysed worms to be expelled in the animal's stool. This is a sign that the medication is working and eliminating the parasites from the animal's system.

How quickly a dewormer acts depends on the type of medication used. In general, the first effects can be observed a few hours to a few days after administration. The parasites gradually begin to be eliminated, and it is essential to follow the veterinarian's instructions for a complete treatment.

Deworming may be necessary all year round, but some periods are more critical. For example, in spring and autumn, parasitic infestations are often more frequent due to weather conditions that favour the proliferation of parasites. It is therefore particularly important to deworm your animals before these seasons to prevent infestations.

In summary, dewormer for animals is essential to maintain the health and well-being of your four-legged companions. By staying alert to signs of infestation and following a regular deworming schedule, you can protect your animals against internal parasites and ensure their health in the long term.

How to act and choose the right dewormer?

In summary, dewormer for animals is essential to maintain the health and well-being of your four-legged companions. By staying alert to signs of infestation and following a regular deworming schedule, you can protect your animals against internal parasites and ensure their health in the long term.

For more advice and products suited to your dogs, cats, horses and exotic pets, discover our full range of dewormers on produits-veto.com.

To find out more about deworming your pets, read our detailed articles on deworming in dogs, deworming in cats, deworming in horses and deworming in exotic pets.

Find all our articles in the Horse, Dog and Cat sections.

Products mentioned in this article

A regulated and controlled activity

  • French national health safety agency (ANSES)
  • Nouvelle-Aquitaine Regional Health Agency
  • French Ministry of Health, Families, Autonomy and Persons with Disabilities
  • French National Order of Pharmacists
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