The Best Dog & Puppy Dewormers (Comparison Chart)

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Gastrointestinal parasites (worms) are surprisingly common in pets, but especially in dogs.

Ingestion of the parasite can lead to an uncomfortable and potentially life-threatening infestation.

Thankfully, most cases can be quickly and easily remedied with deworming medicine.

In this article, we’re going to break down how dewormers work, how to choose the right one, and the best dewormers for dogs.

Let’s get to it:

How Does A Dewormer Work?

Dewormers typically come in the form of tablets or chewables (oral medications), but there are liquid forms as well that are great for small dogs and puppies.

Most worms target the intestinal tract, and they include tapeworms, roundworms, hookworms, and whipworms. Heartworms are also common and affect the heart and arteries.

Tapeworms, roundworms, and hookworms target the stomach and intestine. The dewormer either dissolves the worm itself or paralyzes it and causes it to release its sucker and fall through the intestinal tract. The worm is excreted in the dog’s stool.

This treatment does not kill larvae living in the animal’s body, so administration must continue until the larvae evolve into adults and are treated.

Heartworms infect the heart, lungs, and arteries. Various heartworm treatments are used to kill the adults and larvae, and heartworm preventative medicine is commonly given as part of a dog’s supplemental diet.

How Long Does It Take to Work?

Deworming time varies based on the severity of the infestation and the specific dewormer used. However, most dewormers can remove the infestation within 2-3 weeks.

How to Choose the Right Dewormer

The most important thing to do when looking for a dewormer is to find a medication that treats the specific type of worm your dog is infested with. For example, a medication that combats roundworms might not affect tapeworms or hookworms. Luckily, many dog dewormers treat multiple types of parasites.

It’s also imperative that you consult your veterinarian beforehand to correctly diagnose which worm is inhabiting your pup.

The right dewormer is one that treats the specific worm your dog is infected with and treats it efficiently and effectively.

The following dewormers do just that.

The Best Dog Dewormers

1. Panacur C – Best Overall Dewormer

Panacur C

Panacur C is the best overall canine dewormer.

It treats most of the main types of parasitic worms: Tapeworms, Roundworms, Hookworms, and Whipworms. It’s also used by veterinarians to treat other types of parasites.

Simply mix it with your dog’s food and let it work its magic.

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2. Bayer Quad Dewormer

Bayer Quad Dewormer

Bayer is one of the most trusted brands in pet products. Their Quad Dewormer removes pesky tapeworms, hookworms, roundworms, and whipworms from your pup.

This broad specturm anthelmintic dewormer is one of the most effective on the market.

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3. Safeguard


Safeguard works on a host of parasitic worms that may infect your dog. It is also a broad spectrum dewormer, which means you don’t have to buy multiple products to treat different worms.

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4. Sentry HC WormX

Sentry HC WormX

WormX by Sentry is one of the most effective deworming remedies.

It features ingredients found in the leading veterinary dewormers, and it comes in chewable tablets that are easy to administer in dog food or as a treat.

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5. Durvet Liquid Wormer

Durvet Liquid Wormer

This liquid wormer by Durvet is an excellent choice for small dogs or puppies who struggle to take tablets or chews.

It works against roundworms and hookworms, and is safe to use on puppies as young as two weeks old.

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Worms can cause nasty infections, but hopefully this guide has given you everything you need to know to help your dog fight them.

Don’t forget to contact a veterinarian to confirm which worm is inhabiting your dog before administering any treatment.

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