Simparica Trio provides triple protection against fleas and ticks, intestinal worms and deadly heartworm disease all in a tasty monthly chew.Simparica Trio 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. Just one dose of Simparica Trio provides triple protectionTasty liver flavoured chew that dogs will loveCan be given with or without foodCan be given from 8 weeks of ageSuitable for dogs from as little as 1.25kg100% effective at preventing heartworm disease