Heartworm

(72 results)
Simparica Trio Chewable Tablets for Dogs - 44.1-88 lbs, Green Box
2 sizes
(48)
$44.63 - $225.50
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Simparica Trio Chewable Tablets for Dogs - 22.1-44 lbs, Blue Box
2 sizes
(19)
$45.20 - $225.50
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Simparica Trio Chewable Tablets for Dogs - 11.1-22 lbs, Caramel Box
2 sizes
(16)
$40.05 - $200.31
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Heartgard Plus Chewables For Dogs 51-100 lbs Brown
3 sizes
(18)
$19.49 - $163.09
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Simparica Trio Chewable Tablets for Dogs - 88.1-132 lbs, Brown Box
2 sizes
(5)
$45.20 - $225.50
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Simparica Trio Chewable Tablets for Dogs - 5.6-11 lbs, Purple Box
2 sizes
(7)
$39.47 - $198.05
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NexGard Plus Chewable Tablets for Dogs - 66.1-132 lbs, Red Box
3 sizes
(11)
$48.99 - $242.49
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NexGard Plus Chewable Tablets for Dogs - 33.1-66 lbs, Purple Box
3 sizes
(11)
$47.79 - $235.59
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NexGard Plus Chewable Tablets for Dogs - 17.1-33 lbs, Gold Box
3 sizes
(10)
$46.49 - $228.39
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Heartgard Plus Chewables For Dogs 26-50 lbs Green
3 sizes
(14)
$16.19 - $135.69
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Heartgard Plus Chewables For Dogs 1-25 lbs Blue
3 sizes
(14)
$12.79 - $107.09
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Credelio Quattro Chewable Tablets Dogs 50.1-100 lbs, 6-in-1 Parasite Protection, 1 & 6 Month Supply
2 sizes
(1)
$42.49 - $241.50
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NexGard Plus Chewable Tablets for Dogs - 8.1-17 lbs, Green Box
3 sizes
(10)
$45.09 - $214.19
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Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 60.1-120lbs
2 sizes
(6)
$26.81 - $177.49
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Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 10.1-20lbs
2 sizes
(5)
$24.50 - $162.19
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Interceptor Plus Prevention for Heartworm + 4 Other Worms for Dogs 50.1-100 lbs - 12 Chews, 12-Month
3 sizes
(17)
$15.99 - $171.35
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Credelio Quattro Chewable Tablets Dogs 25.1-50 lbs, 6-in-1 Parasite Protection, 1 & 6 Month Supply
2 sizes
(0)
$42.49 - $235.05
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Credelio Quattro Chewable Tablets Dogs 12.1-25 lbs, 6-in-1 Parasite Protection, 1 & 6 Month Supply
2 sizes
(0)
$42.49 - $217.15
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Interceptor Plus Prevention for Heartworm + 4 Other Worms for Dogs 25.1-50 lbs - 12 Chews, 12-Month
3 sizes
(1)
$13.59 - $142.56
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Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 40.1-60 lbs
2 sizes
(8)
$26.38 - $174.59
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Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 20.1-40 lbs
2 sizes
(1)
$25.11 - $166.29
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Tri-Heart Plus Chewable Tablets for Dogs 51-100 lbs Brown
(3)
$52.99
Sign In & Enjoy Free Shipping Over $49
Sentinel Flavor Tabs for Dogs 51-100 lbs White
(1)
$76.99
Sign In & Enjoy Free Shipping Over $49
Simparica Trio Chewable Tablets for Dogs - 2.8-5.5 lbs, Gold Box
2 sizes
(1)
$45.20 - $194.04
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Interceptor Plus Prevention for Heartworm + 4 Other Worms for Dogs 8.1-25 lbs - 12 Chews, 12-Month
3 sizes
(0)
$12.39 - $112.66
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Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 5-10 lbs.
2 sizes
(1)
$23.28 - $154.09
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Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 20.1-55 lbs. - 6-Month Supply
2 sizes
(1)
$21.82 - $141.79
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Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 9.1-20 lbs. - 6-Month Supply
2 sizes
(5)
$21.82 - $141.79
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Revolution Topical for Dogs 10.1-20 Brown - 3 Month or 6 Month Supply
2 sizes
(3)
$103.93 - $182.92
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+ 1 more
Credelio Quattro Chewable Tablets Dogs 6.1-12 lbs, 6-in-1 Parasite Protection, 1 & 6 Month Supply
2 sizes
(0)
$42.49 - $213.59
Save 20% on your purchase with code SAVE20 - Online Only!
Save 40% on your first Prescription Flea and Tick Autoship order!
+ 1 more
NexGard Plus Chewable Tablets for Dogs - 4-8 lbs, Orange Box
2 sizes
(8)
$113.49 - $210.59
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Iverhart Max Soft Chews 50.1-100 lbs Brown, 6 Month Supply
(0)
$66.90
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Iverhart Plus 51-100 lbs Supply Brown, 6 Month Supply
(1)
$49.19
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Revolution Topical for Dogs 40.1-85 Teal - 3 Month or 6 Month Supply
2 sizes
(2)
$106.88 - $193.07
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Revolution Topical for Dogs 20.1-40 Red  - 3 Month or 6 Month Supply
2 sizes
(1)
$105.73 - $193.05
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Revolution Topical for Dogs 5.1-10 Purple - 3 Month or 6 Month Supply
2 sizes
(0)
$100.33 - $178.20
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Tri-Heart Plus Chewable Tablets for Dogs 26-50 lbs Green
(3)
$38.99
Sign In & Enjoy Free Shipping Over $49
Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 55.1-88 lbs. - 6-Month Supply
2 sizes
(2)
$21.82 - $141.79
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Save 40% on your first Prescription Flea and Tick Autoship order!
+ 1 more
Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 3-9 lbs. - 6-Month Supply
2 sizes
(5)
$21.82 - $141.79
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Heartworm Disease can be a serious illness for dogs if left untreated. If you suspect your dog may have heartworm disease, make an appointment with your vet as soon as possible. After a visit to the vet has revealed that your dog has, in fact, contracted heartworm disease, your vet may write a prescription for heartworm medications for dogs. The Pharmacy at PetSmart is your go-to for filling prescriptions and carrying out veterinarian treatment plans. 
Pet parents on the search for heartworm medication should consult a vet before implementing any sort of new medication into their pet’s medical regimen. 
PetSmart customers can place prescription orders through The Pharmacy website, as long as they are active prescriptions that have been prescribed by a vet in the last 12 months.
Prescriptions from a licensed veterinarian are required to purchase Heartworm Medication from The Pharmacy at PetSmart. Need to find a vet? We have you covered.
Does your dog have more than one medical concern? The Pharmacy carries many medications other than heartworm medications for dogs, like:  
While you’re here, stock up on all the products your dog needs to live their best life, with PetSmart’s dog supplies. We have a wide variety of dog foodfood and water bowlscollarsleashes and harnesses, and dog treats to keep your dog’s tail wagging.