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Rated 4.7 out of 5 stars
722
$18.99 Chewy Price
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$21.99 List Price
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Rated 4.9 out of 5 stars
16,276
$56.49 Chewy Price
($9.42/ea) Price per Unit
$58.99 List Price
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Rated 4.7 out of 5 stars
748
$6.25 Chewy Price
($2.09/ea) Price per Unit
$8.64 List Price
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Rated 4.8 out of 5 stars
3,084
$49.99 Chewy Price
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Rated 4.8 out of 5 stars
590
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($1.67/g) Price per Unit
$24.77 List Price
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Rated 4.7 out of 5 stars
15,181
$211.12 Chewy Price
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$200.56 Autoship Price
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Rated 4.6 out of 5 stars
254
$23.99 Chewy Price
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Rated 4.9 out of 5 stars
15,409
$83.89 Chewy Price
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Rated 4.8 out of 5 stars
5,164
$79.18 Chewy Price
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Rated 4.6 out of 5 stars
818
$15.99 Chewy Price
$18.33 List Price
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Rated 4.6 out of 5 stars
249
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Rated 4.9 out of 5 stars
8,726
$71.39 Chewy Price
($11.90/ea) Price per Unit
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Rated 4.1 out of 5 stars
577
$17.99 Chewy Price
$19.99 List Price
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Rated 4.8 out of 5 stars
1,795
$72.99 Chewy Price
($12.17/ea) Price per Unit
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Rated 4.8 out of 5 stars
2,918
$28.99 Chewy Price
($4.84/ea) Price per Unit
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Rated 4.8 out of 5 stars
451
$9.99 Chewy Price
($3.33/g) Price per Unit
$10.31 List Price
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Rated 4.8 out of 5 stars
9,784
$188.98 Chewy Price
($31.50/ea) Price per Unit
$179.53 Autoship Price
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Rated 4.5 out of 5 stars
105
$52.99 Chewy Price
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Rated 4.6 out of 5 stars
539
$54.99 Chewy Price
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$59.99 List Price
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Rated 4.8 out of 5 stars
4,001
$52.08 Chewy Price
($8.68/ea) Price per Unit
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Rated 4.6 out of 5 stars
382
$10.79 Chewy Price
($3.60/ea) Price per Unit
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Rated 4.7 out of 5 stars
3,075
$224.39 Chewy Price
($37.40/ea) Price per Unit
$230.99 List Price
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Rated 4.8 out of 5 stars
442
$49.10 Chewy Price
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$52.43 List Price
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Rated 4.5 out of 5 stars
170
$10.99 Chewy Price
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$12.64 List Price
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Rated 4.8 out of 5 stars
2,244
$50.99 Chewy Price
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Rated 4.8 out of 5 stars
1,616
$36.99 Chewy Price
($6.17/ea) Price per Unit
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Rated 4.7 out of 5 stars
307
$12.99 Chewy Price
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$15.42 List Price
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Rated 4.8 out of 5 stars
8,037
$205.18 Chewy Price
($34.20/ea) Price per Unit
$194.92 Autoship Price
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Rated 4.7 out of 5 stars
88
$34.99 Chewy Price
($17.50/ea) Price per Unit
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Rated 4.3 out of 5 stars
91
$12.99 Chewy Price
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Rated 4.8 out of 5 stars
2,892
$65.88 Chewy Price
($10.98/ea) Price per Unit
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Rated 4.6 out of 5 stars
92
$13.59 Chewy Price
($6.80/fl oz) Price per Unit
$20.69 List Price
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Rated 4.5 out of 5 stars
2,204
$230.99 Chewy Price
($38.50/ea) Price per Unit
$238.99 List Price
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Rated 4.3 out of 5 stars
142
$13.49 Chewy Price
($1.69/fl oz) Price per Unit
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Rated 3.4 out of 5 stars
32
$238.98 Chewy Price
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Rated 4.7 out of 5 stars
1,255
$77.99 Chewy Price
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Heartworm Prevention & Dewormers for Dogs

Your dog can be exposed to a wide range of parasites during normal daily activities like going for a walk or playing with other pups. Many spot-on treatments are only effective against external parasites, so it's worth asking your vet about heartworm prevention and dewormers for dogs. Vets generally recommend running a heartworm test before starting heartworm prevention. If roundworms, tapeworms, or hookworms are present, obtaining a diagnosis is crucial for choosing the proper treatment. Here are some factors to consider when buying heartworm prevention and dewormers for dogs:

  • Worm type: Different treatments are effective against heartworms than intestinal worms
  • Dog age: Puppies may require more frequent deworming than adult dogs
  • Weight: Deworming treatment dosages are generally weight-dependent
  • Administration: Choose from oral medication, topical treatments, and injectables
  • Frequency: Preventive products are usually given monthly, while treatments for active infestations may require repeated doses

Consult your veterinarian before using heartworm prevention and dewormers for dogs. Your vet is the best person to offer advice regarding dosage and administration of heartworm prevention and dewormers for dogs. Once you and your vet decide on a treatment, add it to your recurring Autoship to make sure you always have it on hand when you need it.

Frequently Asked Questions about Heartworm Prevention & Dewormers for Dogs

What is the difference between heartworm prevention and dewormers for dogs?

The difference between heartworm prevention and dewormers for dogs is that heartworm prevention prevents heartworms, while dewormer medicine for dogs gets rid of intestinal parasites.

Does my dog need heartworm prevention and dewormer?

Your dog likely does need heartworm prevention and dewormer, but your vet is the authority on your dog's health and the only one who can prescribe a combination heartworm medication. Most vets recommend heartworm protection for dogs year-round, either with or without an added dewormer, so talk to your vet and see what she recommends for your pet. Many flea medications also contain a dewormer for dogs, so you may not need to choose a heartworm preventative with one in it.

How often should I give my dog dewormer?

You should give your dog dewormer as often as your vet recommends. If your dog has worms, your vet may recommend a single-use deworming treatment that targets the specific type of parasites he has. Your vet may also recommend a monthly deworming treatment and worm preventative product. Many heartworm preventatives and flea and tick preventatives also contain dewormers.

How often should I give my dog heartworm prevention?

You should give your dog heartworm prevention as often as your vet recommends or according to the directions on the product package. Most heartworm prevention medicines are designed to be given once a month, but the product your vet prescribes may be different.

What are dewormers for dogs?

Dewormers for dogs are medications that help eliminate parasitic worms like tapeworms, roundworms, and hookworms. Some dewormers are also effective against external parasites like fleas, ticks, and mites.

How often should you deworm a dog?

How often you need to deworm a dog depends on their age and risk level. Puppies may need to be dewormed every 2-3 weeks until they reach six months of age. For an adult dog not taking a monthly preventive, deworming may be required 2-4 times per year.

What happens if you don't deworm your dog?

If you don't deworm your dog when they have an active parasitic infestation, they could develop nutritional deficiencies and digestive issues. Severe infestations can lead to organ damage and, particularly in puppies, can even be fatal.

How can I prevent heartworm in dogs?

The best way to prevent heartworm in dogs is to use heartworm preventives like oral medications and spot-on treatments. Your vet may recommend running a heartworm test before starting a preventive, just to make sure no worms are currently present.

Do I need a prescription for dog heartworm prevention and dewormers?

Yes, you need a prescription for dog heartworm prevention and may need one to purchase certain dewormers. Dosage for these treatments is generally weight-dependent, so make sure you're purchasing an appropriate formula.