Interceptor Spectrum for Medium Dogs 11–22kg (Yellow) is a monthly chicken-flavoured worming chew dosed for medium-breed dogs. The yellow pack signals the medium weight tier in the Interceptor Spectrum range and covers heartworm prevention and intestinal worm treatment in a single chew given once a month.

Each chew combines milbemycin oxime and praziquantel — milbemycin handles heartworm and the major nematodes (roundworm, hookworm, whipworm), while praziquantel covers all common tapeworms including hydatid tapeworm. The chicken flavouring is designed to be taken voluntarily as a treat, removing the need to hide doses in food or push pills past unwilling dogs. Safe for breeding, pregnant, and lactating dogs as well as standard adult use.

Monthly chew wormers consolidate what used to be three separate monthly tasks — heartworm, intestinal nematodes, and tapeworm — into one easy step. Interceptor Spectrum is one of the most commonly recommended options for that exact reason, and the colour-coded weight tiers keep dosing straightforward.