Dewormers & Parasite Care

(68 results)
Simparica Trio Chewable Tablets for Dogs - 44.1-88 lbs, Green Box
2 sizes
(50)
$44.63 - $223.89
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Simparica Trio Chewable Tablets for Dogs - 22.1-44 lbs, Blue Box
2 sizes
(22)
$43.49 - $217.48
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
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Simparica Trio Chewable Tablets for Dogs - 11.1-22 lbs, Caramel Box
2 sizes
(18)
$40.05 - $200.31
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
NexGard Plus Chewable Tablets for Dogs - 33.1-66 lbs, Purple Box
3 sizes
(13)
$47.79 - $235.59
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Simparica Trio Chewable Tablets for Dogs - 88.1-132 lbs, Brown Box
2 sizes
(5)
$45.20 - $225.50
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Heartgard Plus Chewables For Dogs 51-100 lbs Brown
3 sizes
(18)
$19.49 - $163.09
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
NexGard Plus Chewable Tablets for Dogs - 66.1-132 lbs, Red Box
3 sizes
(13)
$48.99 - $242.49
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Simparica Trio Chewable Tablets for Dogs - 5.6-11 lbs, Purple Box
2 sizes
(7)
$39.47 - $198.05
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
NexGard Plus Chewable Tablets for Dogs - 17.1-33 lbs, Gold Box
3 sizes
(12)
$46.49 - $228.39
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Heartgard Plus Chewables For Dogs 1-25 lbs Blue
3 sizes
(15)
$12.79 - $107.09
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
NexGard Plus Chewable Tablets for Dogs - 8.1-17 lbs, Green Box
3 sizes
(12)
$45.09 - $214.19
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Heartgard Plus Chewables For Dogs 26-50 lbs Green
3 sizes
(14)
$16.19 - $135.69
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 60.1-120lbs
2 sizes
(6)
$26.81 - $177.49
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Interceptor Plus Dog Chew 50.1-100lbs (Blue), Prevent Heartworm & Treat 4 Other Worms, 1, 6, 12 Mo
3 sizes
(23)
$15.99 - $171.35
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 10.1-20lbs
2 sizes
(5)
$24.50 - $162.19
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 40.1-60 lbs
2 sizes
(8)
$26.38 - $174.59
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 20.1-40 lbs
2 sizes
(1)
$25.11 - $166.29
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Tri-Heart Plus Chewable Tablets for Dogs 51-100 lbs Brown
(3)
$52.99
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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
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Simparica Trio Chewable Tablets for Dogs - 2.8-5.5 lbs, Gold Box
2 sizes
(1)
$38.90 - $194.04
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Trifexis Heartworm Prevention, Treats & Controls Flea Infestations + 4 Other Worms, Dogs 5-10 lbs.
2 sizes
(1)
$23.28 - $154.09
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
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)
$21.79 - $141.19
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 20.1-55 lbs. - 6-Month Supply
2 sizes
(1)
$21.69 - $140.49
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Revolution Topical for Dogs 20.1-40 Red  - 3 Month or 6 Month Supply
2 sizes
(1)
$105.73 - $193.05
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
NexGard Plus Chewable Tablets for Dogs 4-8 lbs (Orange Box) - 1, 3, or 6-Month Supply
3 sizes
(10)
$44.29 - $210.59
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Iverhart Plus 51-100 lbs Supply Brown, 6 Month Supply
(1)
$49.19
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Advantage Multi Dog 6-in-1 Heartworm Prevention - Kills Fleas - Dogs 9.1-20 lbs. - 6-Month Supply
2 sizes
(5)
$21.49 - $139.19
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Revolution Topical for Dogs 5.1-10 Purple - 3 Month or 6 Month Supply
2 sizes
(0)
$100.33 - $178.20
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Tri-Heart Plus Chewable Tablets for Dogs 26-50 lbs Green
(3)
$38.99
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Advantage Multi for Dogs 3-9 lbs (Green), Flea & Heartworm Treatment, 1 & 6 Month Supply
2 sizes
(5)
$21.39 - $138.59
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Revolution Topical for Dogs 40.1-85 Teal - 3 Month or 6 Month Supply
2 sizes
(2)
$106.88 - $193.07
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
Sign In & Enjoy Free Shipping Over $49
Interceptor for Dogs and Cats - 51-100 lbs Dogs / 12.1-25 lbs Cats - 6-Month Supply
(2)
$78.49
Buy 1, get the 2nd 25% OFF off dog and cat Flea & Tick products including prescriptions
5X points (10% back in savings) on ALL cat products
+ 1 more
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The Pharmacy at PetSmart carries medications you need for your dog’s worms and parasites. Whether you need worms medication or parasite medication for dogs, we have you covered. At PetSmart, we know that your top priority is helping your dog and following your vet’s treatment plan. 
Remember, don’t give your dog medication without first seeking advice from your vet. 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 dewormer medication from The Pharmacy at PetSmart. Need to find a vet? We have you covered.
Not looking for dewormers and parasite care for your dog? The Pharmacy at PetSmart carries a wide selection of many different medications, including: