How to give Comfortis® (spinosad) to your dog or cat

1 time

Safe for cats 14 weeks of age or older and 2 pounds of body weight or greater.

Safe for dogs 14 weeks of age or older and 2 pounds of body weight or greater.

paw print

One chew, every month.

Administer one tablet of Comfortis once every month to provide year-round protection. Comfortis is approved for use in cats 14 weeks of age or older and 2 pounds of body weight or greater. It’s safe for dogs 14 weeks of age or older and 3.3 pounds of body weight or greater. Refer to the color-coded chart below, which matches the packaging, to see the amount of active ingredient found per tablet for the corresponding weight range.

Comfortis Dosing Information

Give 140 milligrams to dogs weighing 5-10 pounds and cats weighing 4.1-6 pounds. Give 270 milligrams to dogs weighing 10.1-20 pounds and cats weighing 6.1-12 pounds. Give 560 milligrams to dogs weighing 20.1-40 pounds and cats weighing 12.1-24 pounds. Give 810 milligrams to dogs weighing 40.1-60 pounds. Give 1,620 milligrams to dogs weighing 6.1-120 pounds. For dogs weighing more than 120 pounds, administer the appropriate combination of tablets. For cats weighing more than 24 pounds, administer the appropriate combination of tablets.