Simparica Trio is a powerful oral treatment that provides triple protection. It protects your dog against fleas and paralysis ticks, intestinal worms and deadly heartworm. Treats and protects against harmful parasites. The oral chew contains a specially optimised trio of ingredients for proven efficacy including the ingredient moxidectin, the same ingredient used by vets to protect against deadly heartworm disease. It kills fleas and paralysis ticks as well as provides persistent protection against flea and tick for five weeks. The Trio minimizes the risk of paralysis tick and tick infection by eliminating paralysis ticks and brown dog ticks. It breaks flea life cycle and controls flea allergy dermatitis. Easy monthly dosing.