Comfortis Rx is the environmentally friendly, FDA-approved chewable, beef flavored tablet that kills fleas in dogs. Comfortis works from inside the bloodstream of the dog to kill adult fleas before they can lay eggs. Keeps working up to 30 days.

Comfortis is an excellent flea treatment choice for dogs with sensitive skin. Since it is not a spray or topical spot-on, there is zero chance for an application site reaction. The main ingredient, Spinosad is safe for use with puppies and dogs older than 14 weeks. Not for use in cats.

Give Comfortis with food. For best results, begin treatment 1 month before flea activity begins in your area. Comfortis may be given year round.

Prescription items are NON-RETURNABLE and NON-REFUNDABLE.