Credelio Quattro™/Credelio Quattro CA-1

The broadest parasite coverage of its kind* targeting 7 types of parasites in one flavored chewable tablet. Credelio Quattro

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

Get $25 Off 6 Doses or $65 Off 12 Doses

Use the code QUATTRO26 to claim your rebate.

7-in-1 Parasite Coverage§
Credelio Quattro/Credelio Quattro-CA1 makes it easy to protect the ones 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 on Parasites, Gentle on Dogs
Made with active ingredients that are tough on parasites, 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.
Easy-to-Give Chewable Tablet
Credelio Quattro/Credelio Quattro-CA1 comes in a tasty, beef-flavored chewable. It was successfully administered to 98% of dogs in a U.S. field study⁴.

^{§Credelio Quattro protects dogs against ticks, fleas, heartworm disease, roundworms, hookworms and tapeworms. Credleio Quattro-CA1 is conditionally approved for the treatment of New World screwworm larvae infestations in dogs pending a full demonstration of effectiveness.}

^{‡‡Dipylidium caninum, Taenia pisiformis and Echinococcus granulosus}

^{†Fleas and ticks (I. ricinus, A. americanum and I. scapularis)2,3}

^{**Ixodes ricinus}

^{||Amblyomma americanum, Dermacentor variabilis, Ixodes scapularis, Rhipicephalus sanguineus and Haemaphysalis longicornis}

See how the coverage of credelio Quattro/Credelio Quattro-CA1 Compares

You might have questions. We definitely have answers.

: The CA1 in Credelio Quattro/Credelio Quattro-CA1 stands for ‘Conditionally Approved’ by FDA. It means Credelio Quattro-CA1 is conditionally approved for safe use/treatment of New World screwworm larvae infestations in dogs pending a full demonstration of effectiveness.
: Credelio Quattro/Credelio Quattro-CA1 covers 7 types of parasites^§, unlike other chewable brands that only cover five. Those 7 types of parasites include ticks, fleas, heartworm disease, roundworms, hookworms, New World screwworm^§ and 3 species of tapeworms. That means Credelio Quattro/Credelio Quattro-CA1 provides your dog broader coverage in a single chewable than all other chewable brands of its kind*.
^{§Credelio Quattro protects dogs against ticks, fleas, heartworm disease, roundworms, hookworms and tapeworms. Credelio Quattro-CA1 is conditionally approved for the treatment of New World screwworm larvae infestations in dogs pending a full demonstration of effectiveness.}
^{*Based on label comparison of the number of parasite types covered in a chewable that targets ticks.}
: Yes. Your veterinarian can prescribe the dose that best fits your dog. Talk to your veterinarian today about Credelio Quattro/Credelio Quattro-CA1.
: Credelio Quattro starts to kill ticks** and fleas in just 4 hours. 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.
^**Ixodes ricinus
^||A. americanum, D. variabilis, I. scapularis, R. sanguineus and H. longicornis
: Credelio Quattro/Credelio Quattro-CA1 is for dogs and puppies 8 weeks of age and older and weighing 3.3 pounds or greater.
: No. Credelio Quattro/Credelio Quattro-CA1 is not safe for cats. For protection designed for cats, check out Credelio® CAT.
: If a dose is missed, a new dose should be given immediately. If vomiting occurs within an hour after administration, re-administer a new dose. Then, continue on the prescribed dosing schedule.
: Talk to your veterinarian about switching to Credleio Quattro/Credleio Quattro-CA1 from another preventive medication to ensure your dog is protected through the process.
: Credelio Quattro/Credelio Quattro-CA1 should be given to your dog with food or within 30 minutes of a meal.
: Crafted for sensitive dogs, Credelio Quattro/ Credelio Quattro-CA1 comes in a tasty beef-flavored chewable that's meat allergen-free.⁵

SEE ALL FAQs

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.

READ ARTICLE

Tick-borne Diseases: The Risk to Dogs

Ticks can carry diseases that harm pets.

READ ARTICLE

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.

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

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.

Get $25 Off 6 Doses or $65 Off 12 Doses

You might have questions. We definitely have answers.

What does CA1 in the brand name stand for?

How is Credelio Quattro/Credelio Quattro-CA1 different from other chewables?

Do I need a prescription for Credelio Quattro/Credelio Quattro-CA1?

How fast does Credelio Quattro work against ticks and fleas?

How old does my dog have to be to use Credelio Quattro/Credelio Quattro-CA1? How much should they weigh?

Can I give Credelio Quattro/Credelio Quattro-CA1 to my cat?

What if I forgot to give Credelio Quattro/Credelio Quattro-CA1 to my dog. What should I do?

How do I switch from another heartworm medication or flea and tick medication?

How do I administer Credelio Quattro/Credelio Quattro-CA1?

Can Credelio Quattro/Credelio Quattro-CA1 be given to dogs with food allergies?

Learn how your dog may benefit from broad parasite coverage

Can I Catch Worms from My Dog or Cat?

Tick-borne Diseases: The Risk to Dogs