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5 Best Dog Dewormers For Large Breed Dogs

Unfortunately, dogs frequently contract worms and other parasites from the environment. And while these creepy crawlies can cause problems for your canine, most are easy to treat -- you just need to use one of the best dog dewormers to clear the infestation.    

We'll help you do exactly that below by recommending three of the best dewormers on the market. Just be sure to review the information carefully and try to select the best product for your dog's specific needs. 

Note that many authorities recommend using one of these dewormers every 6 months or so as a preventative measure -- even if your dog does not display any symptoms of parasite infestation.

Just be sure to keep your vet in the loop and follow the instructions provided. 

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The 5 Best Dog Dewormers For Large Breeds

The following five dog wormers for large breed dogs are among the best options on the market. Make sure that you review the information provided carefully to ensure that you select a product that treats the types of parasites your dog has. It's also important to select an option intended for your dog's age. 

Then, you should also make sure you keep a dog worming treatment in your home, so you can relieve the discomfort and potentially prevent the situation from getting worse. Symptoms to look for include poor appetite, breathing difficulties, sickness, diarrhea, weight loss and unusual tiredness.

Like most infections, unfortunately, there is not just one solution. There are different kinds of dog worms including tapeworms (which are usually carried by fleas), roundworms (which can also infect people, especially young children), as well as lungworms, which are carried by slugs and snails.

Some treatments will clearly state they are for all forms of worms, whereas others may only treat a specific type of infection. You will also need to read the label to ensure what age and size of dog the treatment is suitable for, as some may only be for smaller dogs or puppies, and others for larger breeds.

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Treatments may also be intended to be used on a regular basis to be effective, whereas others may be intended for when an infection has already taken hold.

Different treatments may also take different forms such as chewable tablets that can be hidden in food or regular tablets that can be crushed into food instead. You may also find treatments in the form of powder sachets that need to be sprinkled over each meal.

Be aware that with these type of treatments, it's important your dog is not put off by any taste or texture difference so that they actually eat all of the product to receive the medicinal benefits.

While powder forms might seem convenient and work out cheaper in the long run, you should also be aware that unless your dog eats all of the food in its entirety, then it might not get the whole, correct dosage.

You should also research beforehand if the treatment is likely to give your dog any side effects, especially vomiting and further digestive issues.

Some deworming treatments can contain formulas which could make your dog increasingly unwell, so the best advice is to consult your vet if you are concerned by their original symptoms or how they have reacted to the treatment you have tried so far.

8 In 1 Safe Guard Canine Dewormer

This product is a powder which you sprinkle over your dog’s food 3 times daily. On the one hand, this makes it easy to deliver to the dog, however it depends how your dog reacts to it.

As it's a powder and covers all the food, if your dog first tastes the powder and decides it doesn't like it, then it could reject the whole food, meaning they will not get the benefits and you'll have to try another product.

Not exactly ideal in the middle of an infection, so you might want to try this out during the 6-month deworming process that this product recommends.

If your dog doesn't reject the powder mixed in with their food, then it actually does deliver protection and treatment against a multitude of different worms including tapeworms, roundworms, hookworms, and whipworms.

The dosage depends on the size of your dog, and there is a size guide on the back to instruct you so you give your dog the right amount.

The box is also available in 3 different sizes, which is ideal if you own more than one dog or if you are in the middle of an infection.

8in1 Safe Guard Canine Dewormer

source: chewy.com

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The 8 in 1 canine dewormer is also a very good value compared to other brands which are upwards of 6 times the cost for their deworming treatments. On the other hand, some owners have reported back that due to the low cost, it is not effective and did not cure their dog.

Despite it being a best-selling product, it may not be the best dewormer out there, which is why it's always advisable to try this as part of your regular dog health and grooming routine to see how your dog gets on with it, rather than jumping in at the time of an infection.

Features

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    Provides effective treatment against tapeworms, roundworms, hookworms, and whipworms
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    Sachet form to be taken 3 times daily
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    Suitable for young puppies over the age of 6 weeks, pregnant dogs, and heartworm-infected dogs

Pros

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    ​Treats some of the most common dog worm infection
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    Available in 3 different sizes depending on the size of your dog
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    Easy-to-feed granules that mix into food

Cons

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    May require a separate preventative treatment
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    Small percentage of dogs suffered vomiting as a result of using the product in trials

Verdict

Although this is a popular dog dewormer that can be administered 3 times daily, it has mixed reviews when it comes to how the dog reacts to the taste of their food, and also how effective it is at actually treating worms. The company also suggests adding water to aid in the mixing, especially if you use dry dog food.

Some dogs reacted very well to this product and it quickly cleared up all their worm issues, where as other owners reported side effects and a general lack of improvement so moved on to other treatment.

It is much more affordable than other worm treatments so shouldn't be ruled out altogether, although should probably be tested out first during your dog’s recommended 6 month deworming process, as from those who have tried this so far, the results seem pretty inconclusive.


Merck Animal Health Panacur C Canine DeWormer

Panacur C is another brand who offer relief from hookworms, roundworms, tapeworms, and whipworms, which are some of the most common types your dog is likely to suffer from as well as giardia which is a nasty intestinal infection.

Like other brands of this nature, it also follows a powder form to be administered over your dog’s food. The powder contains a key ingredient called fenbendazole, which kills parasites by binding to parasitic protein, which damages the cell structure of the parasite causing it to die off.

Therefore, if used correctly at the right dosage it will rid your dog of any of the parasites listed on the box.

Each packet treats 40 lbs. and needs to be given once a day for 3 consecutive days. There are also other packets available if your dog’s size falls outside of this category, though keep in mind this particular size is one use per dog, and not for multiple treatments (such as once every six months as recommended) or if you own more than one dog.

Merck Animal Health Panacur C Canine De-Wormer

source: puppy.ws

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Therefore, you may require more than one packet a time which will ramp up the costs in the long run.

Overall the Panacur C has a good reputation among owners, and is also commonly recommended by vets. Only a small percentage (1%) of dogs tested had adverse reactions such as vomiting or stomach upset.

However, the majority of owners across a large variety of breeds reported this dewormer was quick to bring everything under control, and most reported a very satisfactory experience, especially in terms of getting their dog back to normal and out of discomfort.

Features

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    Treats hookworms, roundworms, tapeworms, and whipworms
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    ​Available as 1Gm, 2Gm and 4Gm powder packets
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    Safe for dogs older than 6 weeks

Pros

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    Can be mixed in with a dog’s regular food

Cons

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    Need to ensure dogs will not be put off by the taste as it coats their food

Verdict

Panacur C has your dog covered when it comes to deworming, and best of all, this product is reasonably priced too. Perhaps one of the best features with this dewormer is the addition of fenbendazole, which kills a number of parasites that your dog is most likely to be infected by.

Though, similar to other powdered forms of deworming treatments, you will need to ensure your dog eats all of the food it is sprinkled over for it to be effective, which can be much more troublesome compared to tablet or capsule form where the full dose is administered in one go.


Durvet Triple Medium And Large Dog Wormer

The Durvet triple wormer doesn't kid around when it comes to deworming; in fact, it's capable of treating the following infections: roundworms (Toxocara canis, Toxascaris leonina), hookworms (Ancylostoma caninum, Ancylostoma braziliense, Uncinaria stenocephala) and tapeworms (Dipylidium caninum, Taenia pisiformis) in dogs as well as puppies.

Durvet Triple Medium and Large Dog Wormer

source: durvet.com

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If you buy the smaller pack at two doses, be aware that one dose is actually both pills taken in stages; therefore, if you own multiple dogs or require tablets for a longer length of time (given you will need to deworm each dog you own every 6 months), then you may have to buy the larger 12-dose pack.

As this product is only available in 2 or 12 doses, it may work out considerably more expensive, especially if you own more than one dog.

Remember, each dog will need to be dosed at a separate time also (around two weeks apart).

The first dose of this product will only kill the adult parasites, which is why the second dose is equally as important as this will kill the more immature parasites.

If you don't follow up with the second dose, you may have to repeat the whole process again, which could be a costly affair not to mention putting your dog’s health at risk.

While this treatment is only recommended for medium and larger dogs, Durvet states they make a different treatment that is suitable for puppies. While this may seem like an inconvenience, it's important to administer the right dosage to each size dog you own.

Overall as a deworming treatment, if followed correctly, it is excellent at killing a wide range of parasites that could make your dog very sick if left untreated. It also has not had the same reports of making the dog unwell with digestive issues as other deworming treatments have.

Features

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    Works on 7 different types of tapeworms
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    ​Chewable tablet form
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    Available in 2 or 12 doses per pack

Pros

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    ​Chewable tablet is much easier to hide in dog’s food
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    Tablet form also ensures full, correct dose is given

Cons

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    For medium and large dogs only
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    ​Expensive if you require more than 2 doses
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    Needs to be followed exactly or will have to repeat process

Verdict

While this broad-spectrum dewormer from Durvet could work out to be a costly affair, especially if you own more than one dog, it's an easy way to administer the treatment to your dog. Instead of sprinkling a powder over their food, you simply give them 1 tablet which also ensures all of the dosage is received.

It's a powerful deworming treatment against 7 different types of worms, all of which could cause serious harm and distress to your dog. It does this without the nasty side effects seen in some powdered treatment versions, and overall, has a very high positive feedback rating from owners.

The tablets are good for 2 years from purchase, which is re-assuring if you are buying in bulk with the intention to treat every 6 months as is recommended, or if you have more than one dog to treat.

Bayer Quad Dewormer

Bayer Quad Dewormer is a chewable tablet designed to eliminate four different types of parasites that commonly afflict dogs, including tapeworms, roundworms, whipworms and hookworms.

Chewable tablets are often the most convenient way to administer a worming medication to your dog, and they make it easy to correctly administer the correct dosage. 

Unlike powders which your dog may pick around, you can simply watch your dog eat the tablet to verify he obtained the proper dosage. However, not all dogs find chewable tablets palatable. Fortunately, Bayer Quad Dewormer has a flavor that most dogs like.

This medication is available for dogs of all sizes (small, medium and large). The tablets designed for large dogs are appropriate for all individuals weighing more than 45 pounds. Each pack comes with four chewable tablets, so that you can treat the problem several times to help completely eradicate the worms.

Features

  • Suitable for treating whipworms, hookworms, roundworms and tapeworms
  • Works quickly – results often seen within 24 hours
  • Small tablets are easy to hide in food if need be

Pros

  • One of the few over-the-counter products that is effective for treating tapeworms
  • Affordably priced
  • Most dogs appear to find the tablets palatable

Cons

  • Will not treat protozoans, such as Giardia or Coccidia
  • Some owners reported that the included instructions were a bit vague

Verdict

One of the most effective over-the-counter products available for treating worms, Bayer Quad Dewormer is an excellent choice for many owners. Several owners reported that they began seeing tapeworm fragments or dead roundworms in their dog’s stool within 24 hours of administering the medicine. It’s also an affordable product, made by a very well-known manufacturer, which will help you purchase with confidence.

Nemex-2

Nemex-2 is a liquid worming medication that is specifically designed to target roundworms and hookworms – two of the most common parasites that afflict dogs. This makes it a good choice for the routine worming of puppies and adult dogs.

Liquid worming medications are often relatively easy to administer, and it is pretty easy to ensure that you are giving your dog the correct dosage, as relatively little of the medication is necessary. 

In fact, it takes only one teaspoon of this medication for every 10 pounds of your dog’s body weight. 

Additionally, most dogs appear to like the taste of Nemex 2 and take it willingly.

You can purchase this medication in either a 2-ounce bottle or a 16-ounce bottle, if you need to treat multiple dogs. It is safe for puppies, as long as they are at least 2 weeks old.

Features

  • Easy-to-administer liquid form
  • Suitable for puppies over 2 weeks of age
  • Kills roundworms and hookworms – two of the most common worms that afflict dogs

Pros

  • Many professional trainers, breeders, groomers and shelter professionals use this product to treat dogs
  • Easy to administer with an eyedropper or syringe
  • Most dogs appear to find it palatable  

Cons

  • This product does not come with a safety seal, which some owners may find troubling
  • It does not come with an eyedropper or syringe, so you’ll have to obtain your own separately
  • Does not work for tapeworms or protozoans

Verdict

Nemex 2 is a great choice for owners of dogs suffering from roundworm or hookworm infestations. The liquid form is easy to administer, and most dogs appear to find it tasty. It is available in two different sizes, it is reasonably priced, and most owners reported that it was very effective for ridding their dog of worms.

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Signs and Symptoms of Worms in Dogs

Worms and protozoans can wreak havoc on your dog’s intestinal tract, and they’ll often trigger a number of troubling symptoms. Some of the most commonly observed symptoms of parasite infestations include:

  • Intestinal dysfunction, including diarrhea, constipation, vomiting or excessive gas
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    Skin or coat problems, including dry skin, hair loss or excessive itchiness
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    Reduced appetite or complete refusal of food
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    Reduced energy levels, depression and a general failure to thrive
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    Slow growth or weight loss“Pot-bellied” appearance or bloating
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    “Butt-scooting” behavior (dragging the rear end across the floor or ground)

But perhaps the most obvious sign of a worm infestation is the appearance of worms or eggs in your dog’s stool (they may also be visible if your dog vomits). Sometimes the worms expelled may be dead, but they are often alive. Seeing a wiggling mass of worms emerge from your dog’s body can be upsetting, but it is not particularly problematic, so don’t panic.   

Best Dewormers for Dogs

Important Parasites that Afflict Dogs

There are a number of different parasites that can infect dogs, and although they all cause broadly similar symptoms, there are a number of differences between the various species. Some rarely cause serious health problems, while others may imperil your dog’s very life, if left untreated. Some respond well to a variety of common over-the-counter medications, while others only respond to very specific treatments.

The primary types of parasites that affect dogs include:

Roundworms

Roundworms are some of the most common parasites that afflict dogs, and they’re particularly common in puppies. In fact, the vast majority of puppies have roundworm infestations at birth – and those who aren’t born with them usually contract them in short order by drinking their mother’s milk.

Roundworms often migrate quite a bit inside a dog’s body, and they are frequently seen in a dog’s stool or vomit. Roundworm infestations can quickly reach plague-like proportions, as each female roundworm can produce more than 200,000 eggs each day. And unfortunately, these eggs can persist in the environment (in a dormant state) for years.

Because roundworms are large by parasite standards, and they are quite prolific, they can actually fill a pet’s intestinal tract. This can cause canines to develop a pot-bellied appearance, and, if left untreated, eventually result in an intestinal blockage.

Whipworms

Whipworms rarely cause the types of serious problems that roundworms do, but they can be very unpleasant for dogs. Unfortunately, whipworms do not pass very many eggs, so they can be tough to positively identify when analyzing stool samples.

Because they are also difficult to diagnose via fecal analysis, veterinarians often elect to treat dogs at risk for whipworms (including young puppies, dogs housed in kennels and dogs living in homes with other dogs who’ve been diagnosed as having whipworms), whether they show symptoms of an infestation or not.

Whipworms are very small, although they are occasionally noted in a dog’s stool. They typically look like a long hair, although one end appears larger than the other. The two most common symptoms associated with whipworm infestations include weight loss and mucus-covered stools.  

Hookworms

Hookworms derive their name from their sharp mouthparts, which enable them to cling to the wall of the small intestines. Once attached, they begin feeding on their host’s blood. This can be very dangerous for dogs – particularly young puppies – as it can lead to anemia. Adult dogs can become sick from hookworms, but puppies occasionally die from severe infestations.

And hookworms aren’t only dangerous, they’re also easy for your dog to contract. Hookworm larvae may be ingested from the environment (this is how most adult dogs contract them), but puppies typically acquire them while in their mother’s uterus or while breastfeeding shortly after birth.

Bloody stools, anemia, weight loss and lethargy are some of the most common symptoms of hookworm infestations. Fortunately, hookworms are relatively easy to diagnose by conducting a fecal analysis.  

Tapeworms

Tapeworms have an indirect lifecycle, which means that they require more than one type of host to complete their lifecycle. There are a variety of different tapeworm species, but those that most frequently afflict dogs utilize fleas as the intermediate host. Their larvae live inside the bodies of fleas, and when a dog inadvertently eats a flea while grooming himself, the tapeworm can be transmitted to his body.

Tapeworms grow pretty large – many reach or exceed 6 inches in length. However, they’re perpetually shedding the terminal segments of their body (this is how they reproduce), so their length fluctuates periodically. Unlike many other types of worms, which are likely to occur in high numbers, most tapeworm infestations will consist of very few individual worms.

Tapeworms are usually diagnosed by finding body segments (which look like grains of rice) in your dog’s feces. Tapeworms are often very difficult to eradicate with over-the-counter medications, and you may need your vet’s help to completely treat the problem.  

Protozoans

Not all parasites that affect dogs are worms. Protozoans are single-celled organisms which can also infest your dog’s body and make him sick. There are a variety of different protozoans that can afflict dogs, but Coccidia and Giardia are two of the most common. Dogs can also contract cryptosporidium, which is a protozoan that can also sicken you and your family.

Most protozoans cause broadly similar symptoms, including bloody diarrhea, weight loss, inappetence and a general failure to thrive. Protozoans can be very difficult to positively diagnose, as they are very small and only produce eggs periodically. Accordingly, multiple fecal examinations are often needed.

Few over-the-counter medications will treat protozoan infestations, so it is usually necessary to solicit your vet’s help in treating the problem.  

Shotgun or Targeted? Two Different Approaches to Deworming Your Dog

There are two basic approaches you can employ to treat your dog and eliminate the worms and protozoans clogging up his digestive tract. Both approaches have merit, and we’ll explain them below, so you can try to determine the best method for deworming your pet.

“Targeted” Approach

Ideally, you should always have fecal samples examined by your veterinarian so that you can determine the exact parasites that are infecting your pet. This will allow you to use a medication that specifically targets the worms or protozoans causing your dog problems.

This type of “targeted” approach is typically preferred by veterinarians, as it allows you to treat parasite problems with precision. It also eliminates the need to administer any unnecessary medications to your dog. This is important, as dogs occasionally suffer unpleasant side effects after taking worming medications.

It is also the best way to treat dogs with ongoing problems, which haven’t responded to prior attempts. Like most other worm treatments, you’ll usually need to administer several rounds of medication to completely eliminate the problem.

If you don’t have the time or budget for multiple visits to the vet’s office, you may want to consider trying a home testing kit, such as the Perfect Pet Products Fecal Worm Test. To use this test, you’ll simply need to obtain a sample of your dog’s feces, enclose it in the included sample bag, and mail it to the Perfect Pet Products lab. Within 24 hours, they’ll notify you of the specific parasites that are afflicting your pet.  

“Shotgun” Approach

In contrast to the “targeted” approach described above, the “shotgun” approach seeks to eliminate most of the common parasites that afflict dogs, without spending a lot of time trying to identify the specific worms or protozoans present.

So, instead of analyzing fecal samples and then using medications specifically designed to eliminate specific parasites, the “shotgun” method typically utilizes a broad-spectrum de-worming medication that is designed to treat a variety of different parasites. This approach is often used preemptively, even when parasite problems aren’t suspected.

The benefit of this approach is that it will help owners save a little time and money, and it will usually eliminate the bulk of the parasites present. But the downside is that it may not eradicate all of the parasites in your dog’s body, including those that may cause troubling symptoms.

Given these benefits and drawbacks, this approach is often best suited for routine de-worming and whenever it is necessary to treat a large number of dogs at one time.

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Worms and other parasites are certainly concerning, but they needn't cause you to panic. Just select one of the best dog dewormers above, administer it in the manner indicated on the package, and keep your vet in the loop. 

In no time at all, your dog will expel the parasites and begin feeling great again. 

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