Simparica is a monthly chewable that starts protecting in hours* and lasts for 35 days. That gives you a little wiggle room at the end of the month, in case you’re late with the next month’s dose.
Simparica starts killing ticks and fleas fast. Simparica starts killing fleas within 3 hours and ticks within 8 hours.
No, unlike some other treatments, Simparica can be given with or without food.