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Pet Size

Don't know your pet's weight?

If you can't get them on the scale, try this super simple method:

  1. Weigh yourself.
  2. Weigh yourself holding your pet.
  3. Subtract the two numbers to get their weight.

Too heavy to hold? Your vet will weigh them if you ask (or may already have it on file if you call).


No Prescription Required

  • Description

    Fleas are persistent, and that results in plenty of itching and discomfort for pets. Cats get fleas and getting rid of fleas on cats will be a priority for every pet owner who demands the best for their favorite feline. Cheristin for cats topical flea treatment is your best choice, as it’s a once-a-month flea prevention medication for cats that starts to work fast – killing fleas on cats in as little as 30 minutes! Most fleas are eliminated within 12 hours, and no fleas means a much happier cat.

    You can buy Cheristin for cats with a prescription, and always get the best price on this cat flea killer medication when your order it from World Pet Express.


    Hold applicator tube in hands and in an upright position. Press the cap down until you hear a click, which ingredients the seal has been broken. Part the fur at the base of your cat’s skull and apply the entire contents of the applicator directly to the skin. Let be absorbed into the skin naturally, do not try to rub it into the skin.

    Keep treated area dry for a minimum of 4 hours.

    Repeat once every month for effective flea prevention for cats.


    The active ingredient in Cheristin for cats topical flea treatment is Spinetoram.


    Never exceed dosage guideline – only one application per month. See the veterinarian again if you feel the medication is not working effectively for your cat.

    For use with cats 8 weeks of age and up, and at least 1.8lbs body weight.

    For topical use only. Avoid oral ingestion. Only use with breeding, pregnant, or lactating cats if approved by your veterinarian.

    Harmful if swallowed. Be sure to keep away from eyes, ears, nose, and mouth.


    There are no known drug interactions between Cheristin for cats flea preventative and other Rx pet medications. It is always best to tell your veterinarian about all medications your pet is currently taking before getting a prescription and proceeding to buy Cheristin for cats.

    Side Effects

    Cheristin for cats side effects are rare, but some cats may have application site hair loss, hair change (greasy, clumping or matting), skin irritation, inactivity, vomiting, or loss of appetite. If these side effects are seen, then stop use and consult with your veterinarian again for other flea prevention for cats alternatives.

    Product Code : 13512