 |  |  |  | Tri-Heart Plus (Ivermectin/Pyrantel) Brown for LARGE DOGS (51-100 lbs) Tri Heart Plus for dogs comes in chewable tablets. Each chewable tablet contains 272 mcg ivermectin and 227 mg pyrantel as pamoate salt. Administer once a month to prevent heartworm disease and to treat and control ascarid and hookworm infections in dogs.
Regular price: $31.99 Sale price: $24.50
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