Vetsupply: Credelio Plus is a comprehensive, fast and convenient broad-spectrum treatment that is gentle on your dog but tough on parasites. The product offers effective worm control with milbemycine oxime, plus immediate and persistent tick and flea kill with lotilaner in just one tablet. It effectively kills fleas and ticks, prevents heartworm and flea tapeworm infections, plus kills adult and juvenile hookworms and roundworms along with adult whipworms.