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Have a great conversation with your veterinarian and save up to $65 on your first purchase.

The first and only prescription tablet of its kind that covers against fleas, ticks, heartworm, roundworm, hookworm, tapeworm, new world screwworm

Why choose Credleio Quattro/Credelio Quattro-CA1 for your dog?

  • Broad
    7-in-1 Parasite Coverage§

    Credelio Quattro/Credelio Quattro-CA1 makes it easy to protect the pet you love. 

    It covers ticks, fleas, heartworm disease, New World screwworm§ and three intestinal worms that can be passed to humans — tapeworms, roundworms, and hookworms.

  • tough
    Tough on Parasites

    Made with active ingredients, including praziquantel, proven to kill 100% of 3 species of tapeworms‡‡.

  • Works fast on Ticks** and Fleas

    Credelio Quattro kills >99% of fleas at 8 hours1, and it is  ≥97% effective against new tick​​|| infestations after 48 hours for the entire month.

  • tasty
    Easy-to-Give Chewable Tablet

    Credelio Quattro/Credelio Quattro-CA1 comes in a tasty, beef-flavored chewable5. It was successfully administered to 98% of dogs in a U.S. field study4.

Learn how your dog may benefit from broad parasite coverage

Can I Catch Worms from My Dog or Cat?

Some worms can pose a risk to you, too.

Tick-borne Diseases: The Risk to Dogs

Ticks can carry diseases that harm pets.

Indications: Credelio Quattro is indicated for the prevention of heartworm disease and the treatment and control of roundworm, hookworm, and tapeworm infections. Credelio Quattro kills adult fleas and is indicated for the treatment and prevention of flea infestations and the treatment and control of tick infestations for 1 month in dogs and puppies 8 weeks of age and older and weighing 3.3 pounds or greater. Credelio Quattro is indicated for the prevention of Lyme disease infections as a direct result of killing black-legged ticks.

Credelio Quattro-CA1 is conditionally approved for the treatment of infestations caused by New World screwworm (NWS) larvae in dogs and puppies 8 weeks of age and older and weighing 3.3 pounds or greater. 

Important Safety Information: Lotilaner, an ingredient in Credelio Quattro/Credelio Quattro-CA1, belongs to the isoxazoline class and has been associated with neurologic adverse reactions like tremors, incoordination, and seizures even in dogs without a history of seizures. Use with caution in dogs with a history of seizures or neurologic disorders. Dogs should be tested for existing heartworm infections before Credelio Quattro/Credelio Quattro-CA1 administration as it is not effective against adult heartworms. The safe use in breeding, pregnant, or lactating dogs has not been evaluated. The most frequently reported adverse reactions in clinical trials were vomiting and diarrhea. 

Credelio Quattro-CA1 is conditionally approved by the FDA pending a full demonstration of effectiveness under application number 141-619. If you suspect that your dog is infested with NWS larvae, seek veterinary care immediately for treatment to include removal of larvae and appropriate wound care.

For complete safety information, please see the Credelio Quattro/Credelio Quattro-CA1 product label or ask your veterinarian.

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Credelio Quattro, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates. PM-US-25-0562(6)

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