Best Dewormer For Puppies | WFLA


Which puppy dewormer is the best?

Having a puppy is great fun but requires a lot of initial care. Because of this, it’s important to start on the right track by getting all of their health needs taken care of as quickly as possible.

Puppies are particularly prone to worm infestations, so you should give them a good dewormer on a regular basis to prevent or correct the problem. The best prescription dewormer for puppies and senior dogs is this Sentinel Spectrum Chew for Dogs. It fights most worms and is easy to administer.

What you should know before buying puppy dewormers

Targeted Worms

Each dewormer targets specific parasites, so it’s important to know what type of worms your puppy has before giving the medication. The most common worms include:

  • Tapeworms: These worms are long and have segmented bodies. They can grow up to 8 inches tall. Dewormers kill them by breaking them open in the gut.
  • Hookworms: This smallest type of worm stays mainly in the small intestine and grows up to 2.5 cm long. Most over-the-counter medications only target adults or larvae.
  • roundworms: Roundworms, the most common type of worms found in dogs, look similar to spaghetti pasta and can be up to 5 inches long. Most dewormers work by removing them from the intestinal tract for the puppy to pass through.
  • heartworms: These worms can grow up to 12 inches long and live around the heart. They are treatable but usually require a prescription.
  • whipworms: These tiny worms live in the colon region and are harmful to dogs. They need an antiparasitic drug specifically designed to treat them through all stages.
  • Tinea: Although not technically a worm, ringworm is caused by a fungus that can damage the outer layer of skin. Ringworm is treatable with topical prescription medications.

Over-the-counter vs. prescription dewormers

For severe infestations or chronic worms, you may need a prescription medication. For prevention or for minor infestations, an over-the-counter option is usually sufficient.

When in doubt, speak to a veterinarian to see what they suggest. A vet can perform a fecal test to tell you what type of worms or parasites your puppy has. They can also recommend a specific brand of dewormer or give you a prescription.

side effects

As with most Flea and tick medication, Dewormers usually have minimal to no side effects when used properly. However, some puppies may experience:

  • Reduced appetite.
  • Vomit.
  • Increased salivation.
  • Diarrhea.

These side effects don’t last long and are rarely a cause for concern. However, if your pup starts having seizures or seems lethargic, take him to a veterinarian for medical treatment.

symptoms of worms

Corresponding PetMD, there are a few to tell if your pup has worms. Symptoms often include:

  • Dry or dull coat.
  • hair loss
  • Sudden weight loss.
  • Marked changes in appetite.
  • diarrhea or vomiting.
  • Worms in stool or vomit.
  • big belly
  • Frequent cough.
  • Lethargy.
  • Hindquarters slipping on the floor.

Some of these symptoms can also indicate other potential health problems. Therefore, consult a veterinarian if your pup begins to show any noticeable changes in their behavior or health.

What to Look for in a Quality Puppy Dewormer


The active ingredients used in puppy dewormers vary. Common ones are:

  • pyrantel pamoate.
  • fenbendazole.
  • praziquantel.
  • piperazine.
  • ivermectin.

Certain ingredients only target specific worms or parasites. For example, fenbendazole treats whipworms, hookworms, roundworms, and some tapeworms. Meanwhile, praziquantel helps with flatworms.

Some dewormers only use natural ingredients. While these are generally effective as a preventive measure, they don’t work as well when treating an existing infestation.


Puppy dewormers come in three main forms:

  • chewable tablets: These are similar to soft treats in that they come in a variety of flavors and are intended to be chewed and swallowed directly. You can also add them to foods.
  • Granules: Similar to chewable tablets, granules look similar to tablets. They should be mixed with dry food.
  • Fluid: These dewormers often come with a dropper that allows you to measure and administer an accurate amount of the medication. With younger puppies, you can also put the liquid wormer in a feeding bottle and give it that way.

Some vets use an injection to treat the infestation.

frequency of use

How often you should use a dewormer depends on the type of medication and the puppy’s age and weight. If the infestation is more severe, a veterinarian can create an individual treatment plan for you.

Most puppies should be treated for worms by 2 weeks of age and every two weeks thereafter until they are 12 weeks old. At this point, you should use a dewormer every month for three months until adulthood.

In most cases, you should continue to administer deworming every three months for the duration of your dog’s life. It’s also a good idea to have your vet do a stool test two to four times a year to make sure there are no worms present.

How much can you expect to spend on a puppy dewormer?

Most over-the-counter dewormers cost $10 to $50. Prescription drugs can cost up to $120.

Dewormers for puppies FAQ

Can you use a cat dewormer on puppies?

A Yes, if the packaging says the drug is safe for both of you.

How do puppies get worms?

A Most dogs get parasites from eating feces or other substances that contain worm eggs. Some puppies are also born with worms because their mother is infected. Certain types of worms, such as B. Heartworms are transmitted by infected mosquitoes. Others, like tapeworms, are commonly found in fleas.

What is the best dewormer for puppies?

Top dewormer for puppies

Sentinel Spectrum Chew for Dogs

What you need to know: This prescription dewormer can treat and prevent almost any type of worm infestation, including heartworm, roundworm, whipworm, and hookworm.

What you will love: It comes in a chewable form that is easy to administer. It is safe and effective for dogs at least 6 weeks old and weighing between 2 and 8 pounds.

What you should consider: It does not treat fleas.

Where to buy: Sold by Tough and PetSmart

Best wormer for puppies for the money

Panacur C dewormer for dogs

Panacur C dewormer for dogs

What you need to know: Safe for dogs from 6 weeks of age, this dewormer can prevent and treat common infestations.

What you will love: This drug is formulated to be effective against roundworm, whipworm, Taenia tapeworm, and hookworm. It comes in a powder form that you can mix into your dog’s food. Use three days in a row for best results.

What you should consider: Some dogs don’t like the taste.

Where to buy: Sold by Amazon

It’s worth trying

Nemex-2 wormer

Nemex-2 wormer

What you need to know: This liquid wormer is suitable for puppies that are at least 2 weeks old and older dogs.

What you will love: This medication can treat large hookworms and roundworms and is safe for most dogs. It’s also easy to administer directly into your pup’s food, water, or mouth.

What you should consider: The container does not have a safety lock.

Where to buy: Sold by Amazon

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Angela Watson writes for BestReviews. BestReviews has helped millions of consumers simplify their purchasing decisions, saving them time and money.

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