Worms are a familiar, yet disgusting issue that many pet owners face. Not only do worms pose a hazard to your dog, but they’re also contagious to other pets and family members. If you have other pets in your household who are suffering for worm issues, make sure to treat them too. To find the best products for treating cats, check out our list of The Best Cat Dewormers.
Many pet parents find themselves purchasing a dewormer after diagnosis at the veterinarian’s office or when bringing home a new puppy. If your ordinarily bouncy puppy acts lethargic, you notice your dog butt scooting across the yard or you notice blood and mucus in your dog’s stool, then it’s essential to check for internal parasites.
We reviewed dozens of dog dewormers to identify the best of the best. Amazon reviews and manufacturer information regarding dosage type and side effects helped us compare the various dewormers for dogs and puppies. By looking at the active ingredients and types of worms eliminated, we narrowed down our search to 5 excellent choices.
One of the safest products on the market
Our top pick, Excel Safe-Guard Dewormer, stood out as a clear winner. It has triple the reviews of other products and comes highly recommended for effective and safe action against worms. With trusted ingredients and an affordable price, this treatment clears up most cases of worms in days.
In This Article
The 5 Top-Rated Dog Dewormers
|Top Pick||Excel Safe-Guard Dewormer||4.2|
|Runner Up||Sentry HC WormX Plus||4.5|
|Best for Budget||PetArmor Sure Shot 2x||3.9|
|Best for Puppies||Nemex-2||4.4|
|Best Natural Dewormer||Wholistic Pet Organics Wormer||4.1|
*Ratings are from Amazon at the time of publication and can change
Our Top Pick: Excel Safe-Guard Dewormer
There were several contenders for our top pick, but we chose Excel Safe-Guard Dewormer because it’s considered one of the safest products on the market. It’s one of only a few dog dewormers labeled for use by pregnant dogs and heartworm infected dogs. This broad spectrum dewormer uses a popular active ingredient, fenbendazole, commonly found in prescription dewormers.
Excel SafeGuard is a 3-day treatment that targets 6 types of intestinal parasites including tapeworms, roundworms, hookworms, and whipworms. The dosage goes by the weight of your pet which makes it easy to give an effective dose. The product listing offers several size options for small, medium or large dogs, so you can purchase what you need from 1 product page. Reviewers with large dogs and multiple pets suggest buying the largest size packets (4 grams) and measuring it out for each dog in your house. If your dog is under 40 pounds, then you’ll pay less than $10 for a 3-day treatment. The price doubles for each additional 40 pounds of dog.
Hundreds of dog owners noticed improvement within days of starting treatment. Very few side effects were noted, except for the occasional loose stool, which is a common issue in dogs with worms. Reviewers pointed out that Excel Safe-Guard Dewormer only kills one type of tapeworm. If your canine was diagnosed with the tapeworm Dipylidium caninum, caused by fleas, then you’ll need our runner-up. However, as one of the most trusted brands on the market, this is one of the safest products you can purchase for your pet.
Excel Safe-Guard Dewormer Key Features:
- Active ingredient: Fenbendazole Granules 22.2%
- 3-day treatment
- Multiple size options make it easier for multi-dog households and large dogs
- Granules mix easily into food
- Eliminates tapeworms (Taenia pisiformis), roundworms (Toxocara canis, Toxascaris leonina), hookworms (Ancylostoma caninum, Uncinaria stenocephala), and whipworms (Trichuris vulpis)
- Safe for puppies over 6 weeks
Our Runner Up Pick: Sentry HC WormX Plus
Trusted for use in dogs starting at 12-weeks
We chose the Sentry HC WormX Plus Dewormer because hundreds of reviewers cited its effectiveness in treating both types of tapeworms found in dogs. This treatment also clears up roundworms and hookworms, making it a good choice if you don’t have a clear diagnosis. The active ingredients, pyrantel pamoate, and praziquantel work together to eliminate parasites with a single dose.
This fast-acting treatment results in worm elimination in the first 24 hours. It comes in a beef-flavored chewable tablet that some dogs love. A few reviewers had problems with getting their dog to swallow the pill, but that’s a common issue. The product listing offers size options for small and large dogs which makes measuring out dosages simple. Although this is a potent formula, very few side effects were noted. For around $12 you’ll get enough dewormer to treat a dog under 25 pounds, while $16 will treat a dog up to 150 pounds.
Although Sentry HC WormX Plus has fewer customer reviews than our top pick, it’s considered a safe choice that improves your dog’s health while targeting 7 of the average intestinal parasites. If you need to treat both types of tapeworms, then this strong product will do the job quickly.
Sentry HC WormX Plus Key Features:
- Active ingredients: 114 mg pyrantel pamoate and 114 mg of praziquantel
- 1-day treatment
- Comes in 2 sizes, small and large
- Chewable tablets can be given alone or with food
- Eliminates tapeworms (Dipylidium caninum and Taenia pisiformis), roundworms (Toxocara canis and Toxascaris leonina), hookworms (Ancylostoma caninum, Ancylostoma braziliense, and Uncinaria stenocephala)
- Safe for dogs over 12-weeks old
Best Budget Pick: PetArmor Sure Shot 2x
A vet-quality liquid dewormer
After careful consideration, we found that PetArmor Sure Shot 2x provides the best bang for your buck. It uses the same active ingredient found in the name brand Nemex-2, yet comes in at a substantially lower cost. The liquid wormer is a canine anthelmintic suspension that uses pyrantel pamoate and is FDA approved.
It treats 4 species of worms and prevents reinfestation of large roundworms, yet is safe enough for puppies as young as 2 weeks old. This treatment is great for all sizes of dogs because you measure it out using a dropper or teaspoon. The 2-ounce bottle equals 12 teaspoons, which treats up to 120 pounds of dog. Several customers mentioned keeping a bottle on hand for new litters of pups and that they trust the brand enough to use it over and over again. At less than $8 per bottle, you’ll be able to treat a smaller dog multiple times or a dog weighing 120 pounds once.
The best part of this budget pick is that you can choose the subscribe and save option on Amazon to get an additional 5% to 15% off the price. Families with big dogs, multiple pets, or new litters of pups often purchase the same product several times throughout their dog’s life. Save money by having the PetArmor Sure Shot 2x dewormer shipped regularly for a lower price.
PetArmor Sure Shot 2x Key Features:
- Active Ingredient: pyrantel pamoate
- Attacks roundworms (Toxocara canis and Toxascaris leonina) and hookworms (Ancylostoma caninum and Uncinaria stenocephala)
- 2-ounce liquid solution treats dogs up to 120 pounds
- Mix into dog food for best results
Best Dewormer for Puppies Pick: Nemex-2
While several great choices exist for puppies, we chose Nemex-2 because it’s a respectable brand with a history of safety. Puppies require deworming on a regular schedule, so new puppy owners need to have a reliable dewormer in their cabinet. Since pups need treatment at 2, 3, 4, 6, 8, and 10 weeks of age you want a solution that’s easy on their tiny stomachs and that doesn’t cause problems with their digestive system. The active ingredient, pyrantel pamoate, has been determined safe for use in pups aged 2 weeks and up. With more than 90% of reviewers rating this product with 4-star and 5-star reviews, it stands out as a trusted treatment.
This liquid anthelmintic suspension removes large roundworms and hookworms. Many customers say they noticed it working within 12 hours. Pups love the taste, which is why countless reviewers commented on how their pup lapped the caramel-flavored liquid right out of the bowl. No side effects were noted, as the active ingredient has been proven safe and effective on the tiniest of canines. Whether you use a dropper or a teaspoon, it’s easy to get the right dose for your pet. It’ll cost you less than $20 for a 2-ounce bottle that’ll treat smaller dogs multiple times or very large dogs one time.
When choosing a dewormer for your pup you want one that targets the worms commonly passed from a mother to her babies. Pups tend to get reinfected while nursing and from eating stuff off the ground. Since you’ll be treating multiple times, you want a treatment that’s easy to administer, is gentle on your pup’s delicate stomach, and that comes with plenty of doses. Nemex-2 uses a standard ingredient that’s flavored so puppies can’t resist drinking it.
Nemex-2 Key Features:
- Active Ingredient: 4.54 mg of pyrantel base as pyrantel pamoate per ml
- Pups love the caramel flavor and the liquid is easily dispensed with a dropper
- Removes roundworms (Toxocara canis and Toxascaris leonina) and hookworms (Ancylaria stenocephala)
- Safe for puppies starting at 2 weeks
- Comes in a 2-ounce or 16-ounce size
Best Natural Dewormer for Dogs Pick: Wholistic Pet Organics Wormer
A safe, non-chemical alternative to chemical dewormers
Pet owners turn to natural dog dewormers for several reasons, including wanting a safe, non-chemical treatment. Owners with young puppies or older dogs with weakened immune systems choose Wholistic Pet Organics Wormer to avoid adverse side effects. Others use this product as a preventative year-round. Several reviewers suggest alternating a non-chemical therapy with chemical products for persistent worms. Pet parents feel that the familiar ingredient, Diatomaceous Earth (DE), eliminates worms and provides additional benefits. Organic wormers may improve a dog’s health, stop worm infestations, and prevent future occurrences.
The active ingredient, DE, works by drying out the exoskeleton. While proven to work well in various pests, it’s treatment in intestinal parasites is not as well-known. Reviewers suggest it works as a prevention method by providing flea and tick relief. The powder is easy to measure out, and the ingredients won’t harm your dog. You’ll pay nearly the same price, around $15, regardless of the size option. It comes in either a 4.5-ounce size or 13-ounce size. Since treatment is ongoing, it makes sense to go with the larger size.
Many reviewers saw improvement in their dog’s appearance, especially helping with a dull coat. Others saw increased energy levels. While the research is still out on the effectiveness of natural products on intestinal worms in dogs, using an organic dewormer like Wholistic Pet Organics won’t hurt your pet and may improve its overall health.
Wholistic Pet Organics Wormer Key Features:
- Active Ingredients: Diatomaceous Earth
- Uses raw, natural, whole food ingredients
- Provides flea and tick relief
- Mixes into foods and pets rarely reject their food over the flavor
- No negative side effects noted
Who Should Buy a Dog Dewormer?
It’s common for dogs to pick up internal parasites because dogs and puppies love to play in the places where worms exist. Pests live in soil, fecal matter, and other outdoor creatures. Your dog may inadvertently swallow some fleas and get infected. Plus, worms transfer from dog mothers to their puppies, which is why vets recommend treating pups at regular intervals. If your dog frequents dog parks, plays outside, or lives around cats, then occasional bouts of worms are possible. If your dog has symptoms or a diagnosis from the vet, then purchasing a dewormer is the next step.
Pet parents notice their dogs lack energy or see visible evidence of worms under their dog’s tail or in its poop. Parasites are contagious and won’t go away on their own, which makes treatment essential. Owners wishing to avoid repeat veterinarian fees or the high cost of prescription medications prefer to buy dewormers online. In multi-pet households buying online offers a budget-friendly alternative to treatments from your vet’s office.
If your pet shows symptoms of worms or you have a diagnosis from the vet, then it’s necessary to start your dog on a dewormer. Keeping a package on hand is a sure way to address this problem immediately. Nearly all dog owners will purchase treatment for worms at some point in their dog’s life. Luckily, effective treatments exist for all intestinal parasites.
One of the safest products on the market
Important Features to Consider
A dog dewormer should have a few important features. Here’s what to consider when selecting a dog dewormer for your dog:
- Active ingredients. There are several ingredients that are used either alone or in combination with others. Not all of the formulas work on every type of worm. For example, dewormers with fenbendazole won’t eliminate tapeworms that come from fleas, while piperazine only works on roundworms.
- Parasites targeted. There’s no sense in giving your dog granules or pills that don’t work. Most products list the strains of worms eliminated. It’s important to note that there are 2 types of tapeworms and many treatments don’t take care of both. The seven most common worms are Tapeworms (Dipylidium caninum and Taenia pisiformis), roundworms (Toxocara canis and Toxascaris leonina), hookworms (Ancylostoma caninum, Ancylostoma braziliense, and Uncinaria stenocephala), and whipworms (Trichuris vulpis).
- The number of doses. Most dewormer treatments are either 1-day or 3-day dosages, although some of the natural dog dewormers are meant to be used on a daily basis.
- How treatment is administered. There are several methods of dosing for puppies and dogs. The most popular products include chewable tablets, although many customers prefer the easy measurement of granular. Other options include tablets that may be crushed or swallowed plus several liquid treatments exist. We found 1 gel product as well.
- Side effects. No one wants their pet to suffer, so it’s important to use trusted products that won’t hurt your young pup or dog. We combed through safety information and reviews to find the best treatments. Trusted brands are easy on your canine’s digestive system and often benefit its quality of life.
- Age and weight specifications. Products are labeled by size and age of dogs. Several options exist for puppies as young as 2-weeks old and very small dogs, while others are only for dogs over 12-weeks or 10-pounds. Correct dosing increases the likelihood of it working.
- Pricing and dosing in multi-dog households. Pet parents with cats and dogs or litters of pups go through more dewormer than dog owners with only 1 dog. Treatments for worms is fairly inexpensive but adds up quick if you’re treating large dogs or multiple dogs.
Frequently Asked Questions
What is a dog dewormer and how does it work?
Quite simply, a dog dewormer rids your dog of the pesky parasites that occur after fleas, a trip to the dog park, or an adventure in the backyard. Different products use various active ingredients to target specific pests, while others cover a broad spectrum. Dewormers come in liquids, granules, chewable and crushable tablets, and gel.
Once your dog ingests the dewormer, then it works by paralyzing the worm’s nervous system. The worms release their hold inside the intestines and come out of the dog either through a bathroom visit or occasionally in vomit. For effective treatment, it’s important to note the amount and frequency of dosage. Dog owners must treat all pets in the home and thoroughly clean to avoid reinfection.
What are the signs of a dog having worms?
There are several visible signs of dogs having worms, although symptoms vary among animals. Paying attention to your dog’s environment is a good start, but it’s nearly impossible to keep young puppies from eating dirt or licking their fur during a bout of fleas. It’s important to check your dog for worms and watch for signs year-round.
Dogs with worms rub their butts on the ground, may have a swollen stomach, or parasites in their feces or vomit. Some dogs have no appetite, while others eat but can’t gain weight. Pet owners notice their dog’s general appearance suffers, with problems like dry hair and excessive shedding. It’s easy to identify tapeworms because they’re visible to the human eye. Owners see lighter-colored flecks under their dog’s tail, commonly referred to as white grains of rice or sesame seed droppings. Others report noticing these specks on furniture where their dog sleeps.
How long does it take to get worms out of a dog?
Dewormers go right into your dog’s digestive system, which is where the parasites live. Most dewormers work immediately to paralyze and remove pests. Reviewers saw results ranging from 24-hours to 1-week. The amount of time depends on using the correct product, treating multiple times for large infestations, and preventing reinfection.
As long as you use a dewormer meant for the diagnosed parasite, then you’ll notice results within hours. Since larvae grow in different stages, it may be necessary to re-treat several weeks later. Nearly all reviewers reported that problems disappeared within a week. Cleaning dog beds and furniture help prevent reinfection.
How often do you need to deworm a dog?
As soon as you notice any symptoms of internal parasites or receive a diagnosis from your vet, then you need to treat your dog immediately. Pets with ongoing infestations may require several treatments, spread out over weeks, to eliminate worms in all stages, from egg to larvae. Even without symptoms, many vets recommend deworming dogs six months and older twice a year. Due to the fun-loving nature of puppies, worms are more common in younger dogs. Vets recommend a deworming schedule starting at 2-weeks and repeated every couple weeks until your pup is 3 months old.
Other Dog Dewormers We Reviewed
One of the safest products on the market
We looked at 20 other dog dewormers. Even though they didn’t make our 5 best dewormers for dogs list, they’re the best of the rest, and each is still an excellent option for your dog. The information you’ll need to compare each one is included with the listing.
Dewormers for Puppies
Owners use this Amazon bestseller to treat puppies as young as 4 weeks old for tapeworms. Reviewers mentioned that the product starts working 8 to 24 hours after the first dose and was easy on their pup’s stomach.
- The active ingredient is 34 mg of Praziquantel
- Treats both types of tapeworms
- Tablets may be crumbled and mixed with food or taken by mouth
- Best for puppies 4 weeks and older
Panacur is a name brand that has been on the market for many years. These 1-gram packets work best for small pups starting at 6-weeks of age. This product eliminates more types of worms than other treatments.
- Uses the active ingredient Fenbendazole
- Eradicates 2 roundworms, 2 hookworms, 1 whipworm, and 1 tapeworm
- Safe for puppies starting at 6 weeks
- Clears up giardia
- Granules make dosing easy according to your pup’s weight
This dewormer targets roundworms and hookworms, while preventing reinfestation in adult dogs, puppies, and lactating females after whelping. It’s safe on the youngest of puppies because it uses a trusted active ingredient.
- This liquid suspension uses the ingredient pyrantel pamoate
- Clears up 2 hookworms and 2 large roundworms
- Large 8-ounce package is perfect for deworming puppies on a schedule
- Safe for pups as young as 2 weeks old
- Prevents reinfestation of the roundworm Toxocara tanis in adult dogs, puppies, and lactating females.
Natural Treatments for Worms
This dewormer causes dehydration in parasites. As a natural wormer, pests don’t build up an immunity so it works every time. This product differs because the suggested application is via food for 3 months
- The main ingredient is food grade diatomaceous earth (DE)
- While no specific worms are listed, reviewers say it works as a fantastic preventative
- Easy to measure powder mixes into dog food
- 15 trace minerals including organic probiotics, kelp, and vitamins A, D3, and E
- Keeps your dog’s digestive system healthy
A topical dewormer with good results when applied to ringworm. This super concentrated liquid extract uses certified organic black walnut dried hulls.
- This formula is based on black walnuts mixed with vegetable palm glycerin and pure water
- It targets ringworm
- Comes in 9 sizes, from 2-ounce to 64-ounces
- Considered safe for cats and dogs
This all in one solution works as a worm preventative while supporting your dog’s health and immune system. Blue Gold is an all-natural treatment that heals your dog after an infection and prevents reinfestation.
- Uses a formula of hundreds of herbs, minerals, plants, oils, and more
- Includes a money back guarantee
- Easy to use as drops are added to food
With 100% natural ingredients and formulated by vets, this herbal extract helps control the intestinal damage. It rids worms in dogs and puppies without the use of chemicals.
- Uses natural ingredients such as fennel, thistle, and wormwood
- The broad spectrum covers roundworms, hookworms, whipworms, tapeworms, and threadworms
- Works as a preventative as well as treatment for worms
- The recommended dose is 1 bottle spread out over several days
This herbal formula is certified as organic and uses ethically wild-harvested herbs. Dogs with worms often suffer from malnutrition and this supplement offers a natural way to help your dog eliminate worms. The company, Pet Wellbeing complies with national guidelines for supplement use.
- Uses natural ingredients, like pumpkin seeds, ash bark, and thyme leaf to support a dog’s digestive system
- Aids animal to resist and expel dependent organisms
- Liquid needs to be administered daily for 4 weeks
- Natural bacon flavor that you can add right to your dog’s food
Broad Spectrum Dewormers
This strong dewormer uses a unique combination of 3 active ingredients to eliminate 4 types of parasitic worms. One treatment starts removing larvae immediately.
- The 3 main ingredients are praziquantel, pyrantel pamoate, and febantel
- Kills common tapeworms, hookworm, roundworms, and whipworms
- Chewable tablets can be given as a treat
- 3 size options according to the size of your pet: 2-25 pounds, 26-60 pounds, and over 45 pounds
With 4.4 stars out of 5 stars, reviewers consider this one of the best values for multi-dog households and those with larger animals. The Durvet Triple Wormer controls 7 strains of parasitic worms, including both types of tapeworm.
- Labeled as having 114 mg of pyrantel pamoate and 114 mg of praziquantel
- Eliminates 2 tapeworms, 2 roundworms, and 3 hookworms
- 12 chewable flavored tablets per package
- One dose treatment
This product is recommended for medium and large dogs and it’s an Amazon’s Choice selection with more than 90% 4-star and 5-star reviews. The D-Worm Combo is a broad spectrum dewormer that treats both types of tapeworms, along with 5 other roundworms and hookworms.
- The combination of pyrantel pamoate and praziquantel are quick acting
- Treats dogs for 7 types of parasites
- The package comes with 2 flavored chewable tablets
- Recommended for dogs 12 weeks and older
This is a great choice for those treating multiple dogs and several litters of puppies. Many pet parents report keeping a bottle on hand to treat ongoing issues.
- 50 mg of pyrantel pamoate per dose
- Gets rid of hookworms and roundworms
- 32 ounces of vanilla flavored liquid makes dosing by dropper easy
- Works in puppies and kittens and the dose is repeated every 2-3 weeks
This product comes in a larger size for dosing larger dogs and multiple pets. It’s considered safe for use in puppies 6 weeks and older plus pregnant dogs. Panacur targets several types of worms, but only one type of tapeworm.
- Uses fenbendazole granules 22.2%
- Eliminates 2 roundworms, 2 hookworms, 1 whipworm, and 1 tapeworm
- Granules easily mix in with food
- 3-day treatment
While lacking in reviews, Pfizer RFD uses a trusted active ingredient that helps your dog get rid of several types of roundworms and hookworms. The liquid dosage mixes nicely into dog food.
- Pyrantel pamoate as the active ingredient
- Treats for roundworms and hookworms
- 2 ounces of liquid
- Safe for puppies and lactating females (after whelping)
As a low price option, ProSense offers a good solution to those with larger dogs. 1 packet treats 40 pounds and eliminates 6 parasites.
- 4 in 1 canine dewormer that uses fenbendazole as the active ingredient
- Clears up 1 tapeworm, 2 roundworms, 2 hookworms, and 1 whipworm
- Safe for weaned pups to start as part of a deworming schedule
- Easy to measure, so those needing multiple treatments save money by purchasing the larger packets
This name brand formula is used by vets and treats 7 types of internal parasites. The large quantity makes it perfect for breeders and pet parents with multiple dogs.
- Proven ingredients pyrantel pamoate and praziquantel are effective against pests
- Treats 2 roundworms, 3 hookworms, and 2 tapeworms
- Chewable pork liver flavored tablets that your dog will eat out of your hand
- For puppies and dogs over 12 weeks of age
As a trusted brand, Durvet offers a larger-sized bottle that controls large roundworms. It’s one of a handful of treatments that are considered safe for dogs and cats.
- Uses piperazine citrate as an antihelmintic to expel pests
- It removes 4 types of roundworms
- Safe for puppies as young as 6 weeks old
- 8 ounces of liquid makes this an affordable choice
This liquid dewormer eliminates roundworms using a safe active ingredient. You can use a dropper or put it directly into your dog’s food.
- Uses piperazine 250 mg as the active ingredient
- Targets roundworms only
- 4 ounces of liquid for accurate dosing
- Safe for multi-pet households and use in both cats and dogs
Reviewers have varying opinions on the effectiveness of this product but note that their pets didn’t mind the flavor. The liquid is an easy solution for eliminating roundworms.
- The main ingredient is piperazine
- Gets rid of roundworms
- 4-ounce bottle treats dogs and cats
For pet owners struggling with other methods of treatment, Peak Marketing Pet Wormer Gel offers a different option for dosage. While it only clears up roundworms, it treats both felines and canines, as young as 6 weeks old.
- The active ingredient is piperazine citrate
- Removes large roundworms
- Must treat again 10 days after initial treatment
- Safe for use in puppies and kittens over 6 weeks of age