Designed to be tough on ticks and fleas. Not your dog.

Credelio® (lotilaner) is a prescription tick and flea medicine that kills ticks and fleas fast*, is well-tolerated and lasts all month long to protect the dog you love.1,2,3,4

*Credelio starts killing fleas in 4 hours and kills 99% within 8 hours for 35 days. Credelio is greater than 97% effective against labeled tick species 48 hours after administration or infestation for 30 days. In a controlled European study, Credelio starts killing ticks (I. ricinus) in 4 hours.

Targeted Power

Credelio's active ingredient, lotilaner, is a member of the isoxazoline family, a novel class of parasiticides that target nerve receptors of ticks and fleas for powerful protection.5

Learn more about ticks and fleas


As a trusted resource, your vet can provide additional information on how prescription-only Credelio can protect your dog from ticks and fleas all year long when taken monthly.