Simparica Trio is a monthly chewable for medium dogs weighing 10.1-20kg, combining flea, tick, heartworm and intestinal worm protection in a single beef-flavoured tablet. It's a prescription-strength parasiticide designed to replace the usual stack of separate flea, tick and worming treatments with one dose given once a month.

The chews use three active ingredients working together: sarolaner tackles fleas and paralysis ticks, moxidectin covers heartworm prevention, and pyrantel handles roundworm and hookworm. Protection kicks in within hours and runs for a full 30 days, so timing doses to the same date each month is straightforward. The beef flavour is designed to be taken as a treat rather than hidden in food, which makes dosing considerably easier for owners of fussy dogs.

Owners tend to choose Simparica Trio when they want the simplicity of a single monthly dose rather than juggling separate flea collars, spot-ons and worming tablets. The all-in-one coverage suits active dogs that spend time outdoors in tick country, and the chewable format avoids the greasy residue of topical treatments.