Capstar Flea Oral Treatment for Cats, 2-25 lbs

By Capstar
Rated 4.1288 out of 5 stars


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$69.98Chewy Price
$71.99Chewy Price
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$66.48Autoship 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.

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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.

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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

37 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.

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.

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

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 4.1288 out of 5 stars
955 Ratings
Would recommend to a friend

927 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 1 out of 5 stars
By Corrie on Nov 22, 2023

Don’t give this to your cats

I receive this yesterday for my 2 cats. An hour after giving it to my 8 month old kitten she started running up walls and all through the house. I thought maybe she just had the zoomies until she starting panting like a dog and her breathing was way faster than normal. She wouldn’t stop licking herself which I’m guessing is because she was itchy. Her pupils were super dilated. She cried for hours and wouldn’t let me put her down. These side effects lasted for hooouuuurrrrssss!!!! If you go on google and look up the side effects for this product it all says what I just explained. I wish I googled it instead of reading reviews. She’s fine now thank God but I’ll never give this to my cats again! Negative 5 stars

Rated 5 out of 5 stars
By Sarah on Nov 25, 2023

A Remarkable Flea Treatment Solution

I've been a fan of this product and for good reason. It's completely odor-free, which is a relief. The fast-acting relief it offers to my feline friends is commendable. It's easy to administer, which saves me a lot of hassle. The way it quickly treats infestations is quite impressive and saves a lot of discomfort. It completely eliminates the need for messy topical solutions. Plus, it's effective for cats up to 25 lbs. I highly recommend it.

Rated 5 out of 5 stars
By Brenna on Nov 16, 2023

Flea-Free Feline with Quick Relief

I've been a fan of this product for quite some time. The main reason being - it kills adult fleas. What's more, it's fast-acting and offers relief within just 30 minutes. The fact that it's a mess-free tablet is a bonus, no more struggling with topical solutions. Six tablets are included, perfect for treating any sudden infestations. I usually use it as a pre-treatment before giving my cat a bath and then follow up with a topical solution. This product is a life-saver for both cats and kittens!

Rated 5 out of 5 stars
By morgan on Nov 8, 2023

I had my first experience with fleas this year. I have a mama cat and her 4 kittens(that are now adults). They are inside cats, but they all were showing signs, scratching and the blood spots all over my bathroom. After giving them capstar and deep cleaning the area they stay in. I haven't seen anymore blood spots and not much scratching. I do want to mention-i sprinkled food grade Diatomaceous Earth on all the cats and brushed it thru, and also sprinkled it in all the carpets and set for 24hrs.

Rated 5 out of 5 stars
By Mary on Nov 22, 2023

Impressed with the Swift Results

After doing research, I decided to buy the flea treatment for my cat. Its fast-acting relief is truly commendable, and I saw a noticeable difference in just a short time. The odor-free tablets are easy to administer, and it only takes 30 minutes to start working. I can't recommend this enough if you want a quick and effective solution for your feline friend's flea problem.

Rated 5 out of 5 stars
By Samantha on Nov 6, 2023

Absolute Must-Have for Cat Owners!

This product is really great, seriously! It's odor-free and kills adult fleas effectively. It offers fast-acting relief, which is a blessing when dealing with flea infestations. It's super easy to administer too. What I love most is how quickly it treats infestations. Just one thing - while it's great for a quick fix, it's more of a quick initial kill of fleas, not lasting protection. It might be best to use this in conjunction with a longer-acting flea med for the best results.

Rated 5 out of 5 stars
By Elisha on Nov 11, 2023

Definitely Worth the Purchase

My feedback is really positive because this product worked wonders on my cat. It's odor-free and mess-free tablets which were easy to administer. The fast-acting relief it provides is unbeatable, killing adult fleas instantly. I loved that it can be given daily and it's safe for cats weighing 2-25 lbs. It quickly treats and prevents infestations, providing complete protection for my pet. Highly recommend!

Rated 5 out of 5 stars
By Joslyn on Nov 19, 2023

Incredibly Fast and Effective Flea Relief

First, I'd like to say that this product is a lifesaver. It kills adult fleas and it's so simple with the mess-free tablets. The fast-acting relief was impressive. It's really easy to administer and treats infestations super quick. It starts working in under 30 minutes! It worked quickly and got rid of them all completely. I couldn't be happier.

Rated 5 out of 5 stars
By Britny on Nov 14, 2023

Highly Effective, Quick Acting Cat Flea Solution

I recommend this product for anyone dealing with pesky cat fleas. One of the prime features is its ability to kill adult fleas rapidly. It starts working in as little as 30 minutes, which is spectacular. Not to mention, it quickly treats infestations, so your beloved feline friend can get back to normal in no time. Overall, it’s a solid choice for flea treatment.

Rated 5 out of 5 stars
By Alley on Nov 17, 2023

Blown Away by the Quick and Easy Relief!

I love the mess-free, odor-free tablets that are easy to administer. It's such a fast-acting relief for my cat. Not only does it kill adult fleas, but it also quickly treats infestations. It starts working in just 30 minutes! Plus, it can be given once a day. It's perfect for both cats and kittens. Incredibly satisfied with this product.