CAPSTAR Flea Oral Treatment for Cats, 2-25 lbs, 6 Tablets -

Capstar Flea Oral Treatment for Cats, 2-25 lbs

By Capstar
Rated 4.0934 out of 5 stars

$31.82Chewy Price
$44.99Chewy Price
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About This Item


  • Kills adult fleas to help prevent infestations on cats and kittens weighing between 2-25 pounds.
  • Capstar is formulated to start killing fleas within just 30 minutes to help give felines fast-acting relief.
  • This treatment can also help quickly treat flea infestations.
  • Capstar can be given to your cat companion as often as once a day.
  • Easy-to-give tablets are mess-free and odor-free, unlike some topical solutions.

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Play Video: Learn More About Capstar From Our Team of Experts
Learn More About Capstar From Our Team of Experts

This product was previously sold as Capstar Flea Treatment for Dogs & Cats. Dog parents, Capstar for Dogs is now available—it's the same great results in a brand new package.

About Capstar Oral Flea Treatment

Start Killing Fleas in Just 30 Minutes

When you have a flea infestation, you need to act fast! Capstar starts killing fleas within 30 minutes and is available without a prescription, so you don't have to wait. One tablet kills 90% of adult fleas in 4 hours for dogs and 6 hours for cats, offering quick relief for your pet.

Easy Oral Delivery

Capstar oral tablets go to work quickly to protect your pet from the inside out and start killing fleas in just 30 minutes! To give Capstar tablets, place the pill directly in your pet's mouth or hide it in food. If you hide the pill in food, watch closely to make sure your pet swallows the pill. If you are not sure that your pet swallowed the pill, it is safe to give a second pill.

Treat Every Cat & Dog in your Home

Capstar is available in two dose strengths for dogs and one dose strength for cats. Capstar is for dogs and cats 2 pounds or greater and 4 weeks of age and older. Each box of Capstar contains 6 fast-acting tablets, so you can treat all the pets in the household. Fleas can reproduce on untreated pets and allow infestations to persist. Stop your pet's flea infestation dead in its tracks with Capstar.

Quick Relief with One Dose

Treatment of flea infestations in dogs and cats

Easy Oral Delivery

Recommended by veterinarians

No prescription needed

About Capstar

Capstar is a fast-acting, oral flea treatment for dogs and cats that kills adult fleas before they can start an infestation. One tablet kills over 90% of fleas within 4 hours for dogs and 6 hours for cats. Unlike topical treatments, Capstar works from the inside out-- there's no mess, no chance of rubbing off and no need to isolate your pet. Treat the pets in your home with the flea killer that starts working in just 30 minutes. Always read, understand and follow label and use directions.
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Questions & Answers

33 Customer Questions

can you administer this pill and also being using a topical flea product as well ?
Answer by ChewySep 11, 2019
If you are currently administering a monthly flea infestation preventive and your pet still gets fleas, you may administer Capstar treatments daily, as needed, for quick relief against a flea infestation. Capstar may also be used with flea shampoos, as well as heartworm preventives, antibiotics, vaccines and de-worming medications.

How many tablets per order?
Answer by ChewyDec 24, 2019
The Capstar Flea Tablets for Cats 2-25 lbs, 6 count includes 6 tablets.

can you cut the pill in half for smaller cats?
Answer by ChewySep 01, 2021
This treatment comes in tablet form and measures approximately 6 millimeter in diameter and 1 millimeter thick (see attached for reference). It is suitable for cats 2 pounds or greater and 4 weeks of age and older. While it is possible to crush or cut this treatment in half the full dose should be given.

Is it normal for my cat to get dehydrated after consuming the pill?
Answer by ChewyAug 01, 2019
Being dehydrated typically isn't a normal side effect and we recommend you consult with a vet.

ReviewsWrite a Review

Rated 4.0934 out of 5 stars
707 Reviews
Would recommend to a friend

707 Customer Reviews

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Rated 5 out of 5 stars
By Catlover on Jan 25, 2023

Capstar Oral Flea killer

This flea treatment works great! I take a spoon and grind the tablet into a powder and then mix with a small amount of pate. The cats gobble it down. They stop scratching within a day. You still need to apply a topical like Frontline or Advantage monthly for continuous protection against the fleas.

Rated 5 out of 5 stars
By Sassy on Jan 14, 2023

get the fleas OUT!

This is an excellent product, when used with other necessary steps to oust fleas for inside your house! My cat is inside only. She got the worst case of fleas when the temperature dropped this year. I have trust in Chewy for providing the tools to eradicate the pests. Thank you for you time

Rated 5 out of 5 stars
By Kala on Jan 21, 2023

Capstar or oral

It's Really works!! My cat had been flea and i use so many stuff and spend money too, but didn't get it off but now, completely gone! Because of this. I would like to buy this again if same happen on her again also flea shampoo as well.

Rated 1 out of 5 stars
By Sierra on Nov 17, 2022

Never ever again, dont buy it

Got this for my outdoor cats who were having a hard time with fleas this year. 30 minutes after they took the pill they went wild. They scratched, cried, tore through the house and eventually hid. One of them lost his ability to jump the others wont leave their hiding spots. Yes this product worked to get rid of the fleas but at the cost of my pets well being. Im never going to buy this again, I urge you to do the same, try frontline instead, it will give you the same results with no violent reaction. Honestly how anyone could make a product that caused this amount of distress and market it as a good thing is beyond me. My pets deserve better

Rated 5 out of 5 stars
By JennF on Jan 11, 2023

Incredibly fast delivery

I can't use topical flea treatments on one of my cats and this oral treatment has been hard to find lately. I ordered it one evening online from Chewy and it was delivered before 10am the next day. You simply can't beat that!!

Rated 5 out of 5 stars
By Kevin on Dec 25, 2022

Good stuff

I have four newborn kittens and they suddenly somehow got fleas about a week after they were born, putting the mama on Capstar was the best choice I ever made, the fleas were gone completely after two doses, and I still have four doses left in case I need it in the future

Rated 5 out of 5 stars
By Lbeck on Dec 14, 2022

Capstar Flea tabs

We had the exterminator in to spray for fleas and then we received the Capstar tabs. So far, all is good. It has been 2 weeks since we gave our furry girl her first tab. She was checked by the Vet 8 days later, the Vet gave her a "free of fleas" bill of health.

Rated 5 out of 5 stars
By FeralMomma on Nov 19, 2022

Essential for rescue cats

I rescue outdoor cats and have found it essential to keep these on hand. All of my rescues are given one pill as soon as they are comfortable enough to start eating. The pills are easily crushed between 2 spoons, after which it can be sprinkled on slightly moistened food. I have never had a cat refuse to eat them when administered in this way - and I have never had a problem with fleas.

Rated 5 out of 5 stars
By Rp82 on Dec 2, 2022

Fleas b gone

This product along with the collar that lasts for months is efficient and extremely effective! This works ppl just take a tablet mix with wet food and make sure you're cat eats it all . They will tick and flea free within hours

Rated 5 out of 5 stars
By Jess on Oct 17, 2022

This product works!

I was a little skeptical at first but we’ve been dealing with fleas for over a year. Frontline and flea collars don’t seem to be working (either that or they’re just really really persistent this year) for my two cats and a dog and no matter how much we vacuum, Steam clean, wash laundry or bag things up, they just keep coming back. I have a 3 story house too. Figured we had nothing left to lose, lol. I bought this one and the dog variant, since we have 2 cats and a dog, gave them each a pill and the corpses just started dropping! It says it works within 30 minutes but I work from home so I was on my 15 minute work break, gave it to them (I crushed it and mixed it in with a little bit of wet food) and had to go back to work. Came back upstairs roughly 3 hours later on my second work break and started petting one of my cats and the corpses were just falling off and onto the table. Some were lying there dead, bigger ones were dying and squirming but unable to jump. Must’ve had about 10-15 fleas within a couple of minutes of petting and combing her (yes I’ve tried the flea comb too and that helps as well). I feel like I should reiterate multiple peoples comments but this is not a once a month preventative like Frontline. This is to be administered once daily as needed to kill off all current live flea adults and should be used with a monthly preventative and yes, this product actually does work! Definitely would recommend this product! I am impressed and super happy to FINALLY be able to give the fur babies some relief. Thank you!!