NexGard vs Heartgard: Which is the Best Choice for Your Pet?

Compare NexGard vs Heartgard for effective pet flea and tick control. Find the best choice for your furry friend.

This post may include affiliate links for which may make a small commission at no exstra cost to you

If you’re a pet owner, you know how important it is to keep your furry friend healthy and protected from parasites. Two popular options for parasite prevention in dogs are NexGard and Heartgard. Both products are highly regarded and widely used, but they have different mechanisms of action and target different types of parasites. In this article, we will compare NexGard and Heartgard to help you make an informed decision about which product is best for your pet.

What is NexGard?

NexGard is a monthly chewable tablet that provides protection against fleas and ticks. It contains a powerful ingredient called afoxolaner, which belongs to the isoxazoline class of drugs. Afoxolaner works by targeting the nervous system of fleas and ticks, causing paralysis and ultimately leading to their death. This makes NexGard an effective and fast-acting solution for flea and tick control in dogs.

How does NexGard work?

When a dog ingests NexGard, the active ingredient, afoxolaner, is absorbed into the bloodstream. As fleas and ticks feed on the dog’s blood, they are exposed to afoxolaner, which quickly kills them. Within hours, NexGard starts to eliminate fleas and ticks, providing continuous protection for a full month.

Is NexGard safe for dogs?

NexGard has been extensively tested and proven to be safe for dogs. However, it’s important to note that some dogs may experience mild side effects such as vomiting, diarrhea, or lethargy. These side effects are usually temporary and resolve on their own. If you have any concerns about your dog’s health, it’s always best to consult with your veterinarian.

What is Heartgard?

Heartgard is a monthly chewable tablet that provides protection against heartworm disease. It contains ivermectin, which is a broad-spectrum antiparasitic medication. Heartgard is specifically designed to target and eliminate heartworm larvae before they can mature into adult worms.

How does Heartgard work?

When a dog ingests Heartgard, the ivermectin is absorbed into the bloodstream. It then travels to the dog’s heart, where it kills the immature heartworm larvae. By preventing the maturation of heartworms, Heartgard effectively protects dogs from heartworm disease.

Is Heartgard safe for dogs?

Heartgard has a long history of safe and effective use in dogs. However, it’s important to note that certain breeds, such as Collies and related breeds, may have a genetic sensitivity to ivermectin. If you have a Collie or a Collie mix, it’s essential to discuss the use of Heartgard with your veterinarian before starting treatment.

NexGard vs Heartgard: Which is the Better Choice?

Now that we have a better understanding of how NexGard and Heartgard work, let’s compare the two products in terms of their effectiveness, convenience, and cost.


Both NexGard and Heartgard are highly effective in their respective areas of parasite control. NexGard provides excellent protection against fleas and ticks, while Heartgard effectively prevents heartworm disease. The choice between the two will depend on the specific needs of your pet.


In terms of convenience, NexGard has the advantage of being a chewable tablet that dogs readily accept as a treat. This makes administration easy and stress-free for both pet owners and their furry companions. On the other hand, Heartgard also comes in a chewable form, but some dogs may be more reluctant to take it.


When it comes to cost, NexGard and Heartgard are comparable. However, it’s important to consider the overall value of the products. NexGard not only provides flea and tick protection but also offers added benefits such as preventing mite infestations and reducing the risk of tick-borne diseases. Heartgard, on the other hand, focuses solely on heartworm prevention.


In conclusion, both NexGard and Heartgard are excellent choices for parasite prevention in dogs. NexGard is highly effective against fleas and ticks, while Heartgard provides reliable protection against heartworm disease. The decision between the two will ultimately depend on your pet’s specific needs and your veterinarian’s recommendation. Remember to consult with your veterinarian before starting any parasite prevention treatment for your furry friend.

So, whether you choose NexGard or Heartgard, you can rest assured that you are providing your pet with the protection they need to stay healthy and happy.

nexgard vs heartgard

Table of Contents

Leave a Reply

Your email address will not be published. Required fields are marked *

Share the Post: