Interceptor Spectrum for Large Dogs in the 3-pack is a three-month supply of monthly worming chews dosed for the 22–45kg weight tier. The smaller pack suits owners new to the product or topping up an existing monthly routine without committing to a half-year supply.

Each chicken-flavoured chew combines milbemycin oxime and praziquantel for full coverage of heartworm prevention plus roundworm, hookworm, whipworm, and all common tapeworms including hydatid tapeworm. The chew is designed to be eaten voluntarily as a treat, which avoids the wrestle that comes with pilling. Safe for breeding, pregnant, and lactating dogs as well as the standard adult use case, and slots into year-round worming programs without seasonal interruption.

Larger dogs need higher milbemycin and praziquantel doses to maintain coverage, and tier-specific packs save the maths of splitting smaller doses across bigger dogs. A 3-pack is the easy entry point before stepping up to a longer supply.