How do I get dog heartworm medicine prescriptions online at Chewy Pharmacy?

Get dog heartworm medicine prescriptions online at Chewy Pharmacy by visiting your vet and talking about the different options. Your vet can perform a heartworm test, recommend a product and issue a prescription for the right preventative and dose. Then, go to Chewy.com and add the prescribed product to your cart. At checkout, you can add your dog’s info and vet contact information so Chewy can verify the prescription. That’s all you need to do to order your heartworm medications from Chewy!

What prescription dog heartworm medicine is best?

The best prescription heartworm medicine will provide year-round protection in an easy-to-administer formula. Your vet can advise you on the different options available and issue a prescription you can use to order your medicine online. Discuss whether you want just heartworm prevention or a combination product that includes dewormers, flea and tick protection, or all three in one dose. Popular brands include Heartgard, Tri-Heart Plus, Sentinel, Revolution and Interceptor Plus.

Why is dog heartworm medicine only available with a prescription?

Dog heartworm medicine is only available with a prescription because your dog needs a heartworm test to ensure he isn’t already infected first. Giving a heartworm preventative to a dog who is already infected can be dangerous or even deadly. A vet can also determine the right dosage for your pet and suggest the right products for your dog’s lifestyle, health and age.

Do dogs need heartworm medicine in the winter?

Dogs need heartworm medicine in the winter, spring, fall and summer because the danger of failing to protect them is too great. Although there are fewer mosquitos around during winter in most climates, there is still the risk of a bite and heartworm contraction. Protect your best friend year-round from heartworms for safety and peace of mind.

How do I set up Autoship for my prescription dog heartworm medicine?

Set up Autoship for your prescription dog heartworm medicine by selecting the Autoship option and choosing a delivery frequency at checkout. Once you set up Autoship, you can change or cancel it any time you want. You must have a valid prescription or remaining refills on file for Autoship pharmacy deliveries to occur. If we do not have a prescription, or if your prescription is expiring soon, one of our team members will reach out to your vet to obtain all the necessary information. You can always have your dog’s heartworm medicine on hand with Autoship from Chewy!

Heartworm Medicine for Dogs: Dog Heartworm Prevention (Ships Free)

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Heartgard Plus Chew for Dogs, 51-100 lbs, (Brown Box), 6 Chews (6-mos. supply)

Rated 4.9116 out of 5 stars

1,244

$67.99Chewy Price

FREE shipping on this item

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Heartgard Plus Chew for Dogs, up to 25 lbs, (Blue Box), 6 Chews (6-mos. supply)

Rated 4.9139 out of 5 stars

1,173

$45.99Chewy Price

FREE shipping over $49

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Interceptor Plus Chew for Dogs, 50.1-100 lbs, (Blue Box), 6 Chews (6-mos. supply)

Rated 4.6499 out of 5 stars

457

$60.81Chewy Price

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Heartgard Plus Chew for Dogs, 26-50 lbs, (Green Box), 6 Chews (6-mos. supply)

Rated 4.9359 out of 5 stars

686

$56.99Chewy Price

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Tri-Heart Plus Chewable Tablet for Dogs, 51-100 lbs, (Brown Box), 6 Chewable Tablets (6-mos. su...

Rated 4.7733 out of 5 stars

300

$37.99Chewy Price

$51.10List Price

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Simparica Trio Chewable Tablet for Dogs, 44.1-88 lbs, (Green Box), 6 Chewable Tablets (6-mos. s...

Rated 4.5508 out of 5 stars

305

$168.41Chewy Price

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Interceptor Plus Chew for Dogs, 25.1-50 lbs, (Yellow Box), 6 Chews (6-mos. supply)

Rated 4.7051 out of 5 stars

234

$50.05Chewy Price

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Sentinel Tablet for Dogs, 26-50 lbs, (Yellow Box), 6 Tablets (6-mos. supply)

Rated 4.5574 out of 5 stars

122

$59.99Chewy Price

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Tri-Heart Plus Chewable Tablet for Dogs, up to 25 lbs, (Blue Box), 6 Chewable Tablets (6-mos. s...

Rated 4.6679 out of 5 stars

262

$21.99Chewy Price

$29.30List Price

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Bundle: Heartgard Plus Chew for Dogs, 51-100 lbs, (Brown Box), 6 Chews (6-mos. supply) & NexGar...

Rated 5 out of 5 stars

$200.98Chewy Price

$190.93Autoship Price

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Interceptor Plus Chew for Dogs, 8.1-25 lbs, (Green Box), 6 Chews (6-mos. supply)

Rated 4.6906 out of 5 stars

278

$43.59Chewy Price

$41.41Autoship Price

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Tri-Heart Plus Chewable Tablet for Dogs, 26-50 lbs, (Green Box), 6 Chewable Tablets (6-mos. sup...

Rated 4.7047 out of 5 stars

149

$28.99Chewy Price

$39.30List Price

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Sentinel Tablet for Dogs, 51-100 lbs, (White Box), 6 Tablets (6-mos. supply)

Rated 4.6786 out of 5 stars

196

$72.49Chewy Price

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Trifexis Chewable Tablet for Dogs, 60.1-120 lbs, (Brown Box), 6 Chewable Tablets (6-mos. supply...

Rated 4.5179 out of 5 stars

251

$133.99Chewy Price

$127.29Autoship Price

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Milbehart Flavored Tablets for Dogs, 26-50 lbs, & Cats, 6.1-12 lbs, (Yellow Box), 6 Flavored Ta...

Rated 5 out of 5 stars

$35.39Chewy Price

$39.78List Price

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Sentinel Spectrum Chew for Dogs, 50.1-100 lbs, (Blue Box), 6 Chews (6-mos. supply)

Rated 4.2417 out of 5 stars

120

$77.49Chewy Price

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Simparica Trio Chewable Tablet for Dogs, 11.1-22.0 lbs, (Caramel Box), 6 Chewable Tablets (6-mo...

Rated 4.5789 out of 5 stars

171

$150.97Chewy Price

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Simparica Trio Chewable Tablet for Dogs, 22.1-44.0 lbs, (Teal Box), 6 Chewable Tablets (6-mos. ...

Rated 4.6418 out of 5 stars

134

$163.53Chewy Price

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Sentinel Tablet for Dogs, 11-25 lbs, (Green Box), 6 Tablets (6-mos. supply)

Rated 4.4213 out of 5 stars

178

$50.49Chewy Price

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Revolution Topical Solution for Dogs, 10.1-20 lbs, (Brown Box), 3 Doses (3-mos. supply)

Rated 4.6069 out of 5 stars

173

$73.99Chewy Price

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Advantage Multi Topical Solution for Dogs, 20.1-55 lbs, (Red Box), 6 Doses (6-mos. supply)

Rated 4.5469 out of 5 stars

$121.79Chewy Price

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Iverhart Max Chew for Dogs, 50.1-100 lbs, (Brown Box), 6 Chews (6-mos. supply)

Rated 3.5 out of 5 stars

$55.05Chewy Price

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Interceptor Chewable Tablet for Dogs, 11-25 lbs, & Cats, 1.5-6 lbs, (Green Box), 6 Chewable Tab...

Rated 4.6897 out of 5 stars

$44.13Chewy Price

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Trifexis Chewable Tablet for Dogs, 10.1-20 lbs, (Orange Box), 6 Chewable Tablets (6-mos. supply...

Rated 4.6087 out of 5 stars

299

$125.99Chewy Price

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Trifexis Chewable Tablet for Dogs, 20.1-40 lbs, (Green Box), 6 Chewable Tablets (6-mos. supply)...

Rated 4.567 out of 5 stars

194

$129.19Chewy Price

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Senergy Topical Solution for Puppies & Kittens, up to 5 lbs, (Mauve Box), 3 Doses (3-mos. suppl...

Rated 3.6667 out of 5 stars

$40.76Chewy Price

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Sentinel Spectrum Chew for Dogs, 8.1-25 lbs, (Green Box), 6 Chews (6-mos. supply)

Rated 4.6019 out of 5 stars

108

$52.99Chewy Price

FREE shipping on this item

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Revolt Topical Solution for Puppies & Kittens, 0-5 lbs, (Rose Box), 3 Doses (3-mos. supply)

Rated 4 out of 5 stars

$24.98Chewy Price

FREE shipping over $49

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Simparica Trio Chewable Tablet for Dogs, 5.6-11.0 lbs, (Purple Box), 6 Chewable Tablets (6-mos....

Rated 4.6629 out of 5 stars

$148.34Chewy Price

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Sentinel Tablet for Dogs, 2-10 lbs, (Brown Box), 6 Tablets (6-mos. supply)

Rated 4.7714 out of 5 stars

$47.99Chewy Price

$49.00List Price

FREE shipping over $49

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Selarid Topical Solution for Dogs, 10.1-20 lbs, (Brown Box), 6 Doses (6-mos. supply)

Rated 4.8571 out of 5 stars

$68.49Chewy Price

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Revolution Topical Solution for Dogs, 5.1-10 lbs, (Purple Box), 6 Doses (6-mos. supply)

Rated 4.5269 out of 5 stars

$126.99Chewy Price

FREE shipping on this item

Prescription Item

Iverhart Max Chew for Dogs, 6-12 lbs, (Purple Box), 6 Chews (6-mos. supply)

Rated 5 out of 5 stars

$38.06Chewy Price

FREE shipping over $49

Prescription Item

Milbehart Flavored Tablets for Dogs, 11-25 lbs, & Cats, 1.5-6 lbs, (Green Box), 6 Flavored Tabl...

$31.05Chewy Price

FREE shipping over $49

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Interceptor Chewable Tablet for Dogs, 51-100 lbs, & Cats, 12.1-25 lbs, (White Box), 6 Chewable ...

Rated 4.6585 out of 5 stars

$62.43Chewy Price

FREE shipping on this item

Prescription Item

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Trifexis Chewable Tablet for Dogs, 40.1-60 lbs, (Blue Box), 6 Chewable Tablets (6-mos. supply)

Rated 4.5158 out of 5 stars

190

$131.79Chewy Price

FREE shipping on this item

Prescription Item

Bundle: Heartgard Plus for Dogs, 6 Chews (6-mos. supply) & NexGard for Dogs, 6 Chews (6-mos. supply)
Rated 5 out of 5 stars
4Reviews
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item
Bundle: Heartgard Plus for Dogs, 6 Chews (6-mos. supply) & NexGard for Dogs, 6 Chews (6-mos. supply)
Rated 5 out of 5 stars
4Reviews
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item
Bundle: Heartgard Plus for Dogs, 6 Chews (6-mos. supply) & NexGard for Dogs, 6 Chews (6-mos. supply)
Rated 5 out of 5 stars
4Reviews
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item
Bundle: Heartgard Plus for Dogs, 6 Chews (6-mos. supply) & NexGard for Dogs, 6 Chews (6-mos. supply)
Rated 5 out of 5 stars
4Reviews
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item
Bundle: Heartgard Plus for Dogs, 6 Chews (6-mos. supply) & NexGard for Dogs, 6 Chews (6-mos. supply)
Rated 5 out of 5 stars
4Reviews
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item
Bundle: Interceptor Plus for Dogs, 6 Chews (6-mos. supply) & Credelio for Dogs, 6 Chewable Tablets (6-mos. supply)
- Prescription Item

Iverhart Max Chew for Dogs, 50.1-100 lbs, (Brown Box), 6 Chews (6-mos. supply)
Rated 3.5 out of 5 stars
34Reviews
- Prescription Item
Iverhart Max Chew for Dogs, 25.1-50 lbs, (Green Box), 6 Chews (6-mos. supply)
Rated 3.3846 out of 5 stars
13Reviews
- Prescription Item
Iverhart Max Chew for Dogs, 12.1-25 lbs, (Blue Box), 6 Chews (6-mos. supply)
Rated 4.1429 out of 5 stars

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Prescription Heartworm Prevention Medicine for Dogs