Cheristin® for cats (spinetoram) is a topical flea protection that is specifically designed for cats. While monthly application is recommended, it starts killing fleas in just 30 minutes and protects your cat for up to 6 weeks.

While monthly application is recommended, a single dose of Cheristin kills adult fleas for up to 6 weeks.

No. Cheristin is available online and at retail outlets without a prescription.

Cheristin kills fleas. Its active ingredient, spinetoram, starts killing fleas in just 30 minutes and remains effective for up to 6 weeks to keep your cat protected from fleas, although monthly application is recommended.

Not at all. Cheristin kills adult fleas in 30 minutes after contact. If you see fleas on your cat, they are most likely new adult fleas that will die very quickly.

If there are any fleas in your cat's environment, it can take weeks or even months for flea larvae to emerge and grow into adults. Cheristin kills adult fleas before they can lay eggs, breaking the flea lifecycle.

All cats in the household should be treated with an approved flea protection product to minimize the likelihood of flea re-infestation. It may also be necessary to apply an approved flea treatment product to your carpet and furniture in an attempt to remove the presence of fleas in your cat's environment. Low volume dosage is one-size-fits-all for cats or kittens 8 weeks of age and older that weigh 1.8 pounds or greater.

Maintain consistent monthly application of Cheristin to provide continual flea protection for your cat and prevent future infestations.

Cheristin is a quick-drying, topical solution that isn't greasy or messy. It has a rounded applicator that makes it easy to apply and comfortable for your cat. Cheristin is only for cats and kittens eight weeks of age or older and weighing 1.8 pounds or more. Always read, understand and follow the label and use directions.

How to apply:

We recommend applying Cheristin monthly. For best results, apply at the base of the head—not between the shoulder blades—to minimize the chances of your cat licking the product. Avoid getting the product in your cat's eyes or mouth.

Cheristin is a low-volume, one-size-fits-all solution for cats and kittens 8 weeks of age or older and 1.8 pounds or greater, which makes it ideal for families with multiple cats.

Yes. Effectiveness studies have demonstrated that a single tube of Cheristin topical solution is appropriate for, and well-tolerated by, cats and kittens 8 weeks of age and older that weigh 1.8 pounds or greater.

No. Giving a partial dose should not be done and is inconsistent with product labeling.

Cheristin is one-size-fits-all solution that’s ideal for families with multiple cats. Since its low-volume dose is meant for cats and kittens 8 weeks of age and older that weigh 1.8 pounds or greater, you’ll want to be sure to apply an entire single dose to each of your cats.

In multiple cat households, do not allow the cats to groom each other until the product has dried.

There are no known interactions between Cheristin and any EPA-registered or FDA-approved flea control (treatment) product for cats at labeled dosages. Please consult with your veterinarian if you have questions about medications that you are using on your cat.

While there are no known medication interactions with Cheristin, it's important to discuss all of your cat's current medications with your veterinarian.

Side effects may include application site reactions such as hair loss, hair change (greasy, clumping or matting) or redness, inflammation and itching. Other side effects such as inactivity, vomiting and loss of appetite have also been reported. View product label for complete safety information and always talk with your veterinarian.

Cheristin is not approved for use in dogs.

Dogs and cats respond to medications differently, and Cheristin is specifically designed for cats. Cheristin has been rigorously tested and approved by the EPA for use specifically on cats.

Cheristin is available in 1-, 3- and 6-dose packages.