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Simparica TRIO offers powerful, all-in-one protection against fleas, ticks, heartworm, roundworms and hookworms — with a single monthly chewable. Its triple-action formula (sarolaner, moxidectin & pyrantel) kills fleas and ticks quickly (within hours), prevents heartworm disease, and treats intestinal worms. A reliable, vet-recommended solution for dogs and puppies. Great choice for busy pet owners who want full-spectrum parasite prevention