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10 Best heartworm flea and tick prevention for dogs of 2026
Save up to 23% off
Best Choice1
HEARTGARD9.8Exceptional
HEARTGARD® Plus (ivermectin/pyrantel) Real-Beef Chewables for Dogs 51-100 lbs (Brown Box) 6 Month Supply of Chews (Heartworm Disease Preventive)
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Value for Money2
Nexgard9.7Exceptional
NexGard Plus (afoxolaner, moxidectin, and pyrantel) Flea and Tick Protection & Heartworm Preventive for Dogs Soft Beef Flavored Chewables, 17.1-33 lbs. (Gold) 1 Chew (1 Month Supply)
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3
Simparica Trio9.6Exceptional
Simparica Trio (sarolaner, moxidectin, and pyrantel chewable Tablets) Chewables for Dogs, 48 mg/tab, 44.1-88 lbs, (Green), 1 Tablet
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4
Frontline9.3Excellent
FRONTLINE Plus Flea & Tick Spot Treatment for Large Breed Dogs 45-88 lbs. (Purple) Count of 3
18% Off-
manufacturer recommended age:1 month and up
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is discontinued by manufacturer:No
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product dimensions:5.75 x 0.75 x 4.5 inches 1.6 ounces
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country of origin:Germany
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asin:B0002J1FOE
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5
PetArmor9.1Excellent
PetArmor Plus Flea and Tick Prevention for Dogs, Large Dog Flea and Tick Treatment, 6 Doses, Waterproof Topical, Fast Acting (45-88 lbs)
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manufacturer recommended age:N/A
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is discontinued by manufacturer:No
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product dimensions:1.33 x 5.74 x 6.75 inches 0.18 ounces
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country of origin:USA
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asin:B01N918D6E
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6
K9 Advantix8.9Very Good
K9 Advantix II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21 - 55 lbs. | 4-Mo Supply
23% Off-
manufacturer recommended age:N/A
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is discontinued by manufacturer:No
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product dimensions:7.75 x 1 x 4.25 inches; 1.45 ounces
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country of origin:N/A
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asin:B004QMX4YW
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7
Amazon Basics8.8Very Good
Amazon Basics Preventative Flea, Tick & Mosquito Topical Treatment for X-Large Dogs (Over 55 pounds), Kills Fleas, Long-Lasting, 6 Count, Packaging May Vary
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manufacturer recommended age:N/A
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is discontinued by manufacturer:N/A
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product dimensions:1.4 x 4.27 x 6.5 inches 0.63 ounces
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country of origin:USA
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asin:B0842P29HK
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8
K9 Advantix8.6Very Good
K9 Advantix II Medium Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 11-20 lbs. | 2-Mo Supply
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manufacturer recommended age:N/A
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is discontinued by manufacturer:No
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product dimensions:1 x 4.38 x 4.75 inches 0.32 ounces
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country of origin:Germany
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asin:B00I2266Y2
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K9 Advantix8.5Good
K9 Advantix II Large Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs 21-55 lbs. | 2-Mo Supply (Packaging may vary)
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manufacturer recommended age:1 month and up
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is discontinued by manufacturer:No
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product dimensions:1 x 4.38 x 4.75 inches; 0.1 ounces
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country of origin:N/A
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asin:B00N7DEBN4
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10
K9 Advantix8.4Good
K9 Advantix II XL Dog Vet-Recommended Flea, Tick & Mosquito Treatment & Prevention | Dogs Over 55 lbs. | 2-Mo Supply
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manufacturer recommended age:1 month and up
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is discontinued by manufacturer:No
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product dimensions:1 x 4.38 x 4.75 inches; 1.13 ounces
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country of origin:N/A
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asin:B00I0BWNUG
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