Capstar Flea Oral Treatment for Dogs, 2-25 lbs, 12 Tablets

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About This Item

Details

  • Active ingredient Nitenpyram starts working quickly and kills adult fleas.
  • Safe for puppies four weeks and older and weighing at least 2 pounds.
  • Safe for use in pregnant or nursing pets.
  • Tablets are easy to feed and help control fleas without the mess and odor of a topical solution.
  • Safe to keep giving daily if your pal gets infested again.

Ingredients

Instructions

FAQ

Learn More About Capstar From Our Team of Experts

This product has recently undergone a packaging change. Customers may now purchase Capstar for Dogs—it's the same great results with a brand new look!

Capstar (nitenpyram) Flea Treatment

Fleas act fast—in just 24 to 48 hours, fleas can start laying eggs and quickly become a nightmare. Capstar begins killing fleas in just 30 minutes with a single dose. Watch them fall fast with Capstar and stop an infestation dead in its tracks.

No Rx Needed

Capstar is available over the counter, making it easy and convenient to provide fast relief for your pet whenever you need it. Capstar can be used daily, as needed, to help treat and control an existing flea infestation.

Fast-Acting & Convenient Tablet

A single dose of Capstar starts killing adult fleas within 30 minutes. Just one tablet kills over 90% of fleas within 4 hours for dogs and 6 hours for cats. It’s easy to use, too— just place it directly in your pet’s mouth or hide it in food.

Facing an Active Flea Infestation?

Follow these 3 steps:

  1. Treat your pet with Capstar as often as once a day.
  2. Treat your home with cleaning and indoor environmental treatments.
  3. Treat your yard with flea and tick spray for outdoor use.

About Capstar

Get back to normal with Capstar (nitenpyram) and make flea treatment as simple and stress-free as possible. Explore the whole range of flea treatment products from Capstar, available in various sizes for both dogs and cats.

Shop Capstar

Questions & Answers

30 Customer Questions


Can this be used on a dog with Epilepsy?

Answer by MKAug 15, 2023
Each pet is different. Please consult your vet. I had a senior poodle with epilepsy and diabetes? I was able to use this with her and it did not contribute to addutional seizures. NOTE that all are different so only your vet can guide you.

How often should i give this to my dog?

Answer by ChewyMay 31, 2020
This treatment is formulated to start killing fleas within just 30 minutes to help give dogs fast-acting relief. It will kill all the adult fleas on your dog within a day, but won't provide lasting protection against fleas. It's recommended to use this product on a dog with an active flea infestation, and then to follow up with a flea preventative. We always recommend consulting with your veterinarian for the best flea treatment advice for your specific location.

What is the shelf life of this product?

Answer by ChewyMar 22, 2024
This product has a shelf life of 3 years.

I can use this on my nursing dog? And her four week pups?

Answer by ChewyJun 04, 2019
These tablets are safe for puppies four weeks and older as well as safe for pregnant or nursing pets.

4.0
Rated 4 out of 5 stars
2369 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

77% Positive

Effectiveness

75% Positive

Ingredients

77% Positive

Long-Term Benefits

75% Positive

1560 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Celeste on May 13, 2025

It worked for the dogs.

When I tell you this worked, I am so happy. My dogs got infested with fleas because we have a neighbor that has an outside dog that is not taken care of. Anyway,

When I tell you this worked, I am so happy. My dogs got infested with fleas because we have a neighbor that has an outside dog that is not taken care of. Anyway, I bought these pills after trying so many different methods and chewables. When I tell you after 30 mins, I checked on both my dogs and I SAW dead fleas and other dying, I was stoked. I was able to take them out easily. The ones that were still moving, were barely moving and I was easier to catch them and take them out. I got all those fleas from both my dogs. That was just after 1 dose. I will repeat the treatment in a few days or week depending what I see. So yeah, I would recommend this 100%

By Celeste on May 13, 2025

Rated 5 out of 5 stars
By Michael on Aug 23, 2024

Effective and Fast Acting Flea Treatment

I've been using Capstar Flea Oral Treatment for my small dog, and it has proven to be a highly effective solution for dealing with flea infestations. My dog is about

I've been using Capstar Flea Oral Treatment for my small dog, and it has proven to be a highly effective solution for dealing with flea infestations. My dog is about 15 pounds, and within 30 minutes of giving her a Capstar tablet, I noticed fleas starting to fall off. By the end of the day, she was flea-free, and much more comfortable. **What I Like:** - **Quick Results:** Capstar works incredibly fast, offering visible results within hours. - **Ease of Use:** The small tablet is easy to administer, and my dog didn’t have any issues taking it. - **No Mess:** Unlike topical treatments, there’s no oily residue or mess to clean up. - **Safe for Small Dogs:** It’s specifically designed for dogs between 2-25 lbs, making it a great option for smaller breeds. **Considerations:** - **Short-Term Solution:** Capstar is great for immediate relief, but it doesn’t offer long-term flea prevention. It’s best used as part of a broader flea management plan. - **Frequent Use:** Since it only kills adult fleas, you may need to administer it more frequently if your dog is heavily infested. Overall, Capstar Flea Oral Treatment is an excellent choice for pet owners looking for a fast and effective way to rid their small dogs of fleas. I highly recommend it for those urgent situations where your pet needs quick relief. --- This review highlights the key benefits while also noting that it's best used as part of a comprehensive flea control regimen.

By Michael on Aug 23, 2024

Rated 5 out of 5 stars
By Lee on May 7, 2025

Fast effective treatment

We recently adopted two puppies. Cute as they were they did come to us with fleas. They were noticeably itching. We ordered this medication received it overnight

We recently adopted two puppies. Cute as they were they did come to us with fleas. They were noticeably itching. We ordered this medication received it overnight. Gave him a one-time job, and the condition of the improved giving us enough time to give to the veterinarian to get new pup care and let them rest without itching!

By Lee on May 7, 2025

Rated 5 out of 5 stars
By AshleyB on Nov 12, 2017

Does what it claims to do!

I buy this for my cat who has had severe allergic reactions to topical spot treatments. When she has fleas, she gets these scabby feeling bumps down her back and

I buy this for my cat who has had severe allergic reactions to topical spot treatments. When she has fleas, she gets these scabby feeling bumps down her back and her coat becomes thinner. These tablets help so much. She won't eat them on her own so I have to either break it up and mix it with her wet food, or smush it into a soft chewy treat. Normally, about a 1/2hr to hour after she's eaten it, she gets a little itching and grooming fit so I know the fleas are going crazy. It is NOT a preventive so of course you have to buy more if you decide to take this route and the fleas come back. I give her one every day for the first 2-3 days, then I skip 2-3 days in between for the remaining doses in the pack. Sometimes she doesn't cooperate for a flea check, so once her bumps clear up and her coat is feeling better, I know she's been on her way to being flea free again.

By AshleyB on Nov 12, 2017

Rated 5 out of 5 stars
By Greeneyesnfurry on Nov 27, 2013
Top 500 Contributor

Killed the adult fleas as promised.

We purchased 2 boxes since we had an unexpected infestation. Same day results knocking dead the adult fleas. Best of all it can be used also along with the Advantage

We purchased 2 boxes since we had an unexpected infestation. Same day results knocking dead the adult fleas. Best of all it can be used also along with the Advantage II , to battle the problem. The price for this at Chewy was awesome compared to when I priced it at the other 2 no names mentioned huge pet supply stores. Not every cat likes to have a pill pushed in its mouth so I hid it in a lil cheese. Thank goodness the pills are small. When you are a multi cat household products like this help take the stress out of the situation.

By Greeneyesnfurry on Nov 27, 2013
Top 500 Contributor

Rated 5 out of 5 stars
By Shannon on Dec 9, 2025
Penny
Penny

Works but there's a catch

Capstar killed the fleas on my animals and so far they haven't returned. I gave it once a day, at the same time, for six days. Coupled that with extensive cleaning

Capstar killed the fleas on my animals and so far they haven't returned. I gave it once a day, at the same time, for six days. Coupled that with extensive cleaning every day. Capstar will only kill adult fleas on the animals. If there are fleas in the home, they can and will still jump on your pet. Once they bite the pet, they'll die. But you'll still see them crawling around on pets until they do. Also not good for flea eggs. Probably cheaper in the long run to go get prescription meds from the vet in all honesty, but this does what it says it will.

By Shannon on Dec 9, 2025
Penny
Penny

Rated 5 out of 5 stars
By Toebeans on Aug 16, 2018

Flea be gone!

This product is awesome! Our litter of 4 week old puppies had gotten fleas. I was so upset because I didn't think there was anything on the market that they could

This product is awesome! Our litter of 4 week old puppies had gotten fleas. I was so upset because I didn't think there was anything on the market that they could have or take. When I found this product I was a bit unsure because the puppies were so little. However, after combining them with a flea comb. I knew I had no choice. I mixed this tiny pill with some soft food and they ate it. I then gave them a bath with dawn and NO MORE FLEAS!! This product works wonders for baby puppies. Just make sure they are the weight before you give it to your furbaby.

By Toebeans on Aug 16, 2018

Rated 5 out of 5 stars
By Vivian on Apr 18, 2024

AMAZING

Let me tell you. I have been dealing with fleas so bad since the start of temps heating up. I could not get rid of them. I was bathing my dogs daily. Sometimes twice

Let me tell you. I have been dealing with fleas so bad since the start of temps heating up. I could not get rid of them. I was bathing my dogs daily. Sometimes twice a day, treating my yard, constantly vacuuming, anything I could think of. I’d sit for Atleast an hour on the tub getting my two little dogs bathed and picking off all the fleas one by one. And then I kid you not like half an hour later they’d have some again. I was desperate to get them GONE. I was skeptical about this at first. Thinking how could they eat a pill and all the fleas die? Half an hr passed like the box suggested it takes to work but nothing was happening. Little suckers were still crawling all over my poor fur babies. Then maybe another 10-15 minutes later they started going crazy. Scratching and running around like lunatics. I started to strip all of our beds to wash our sheets and my dog jumped on my bare bed, so it was white, and sure enough the little dudes are dead. Just falling off. Absolutely amazing! I continued treatment with the black flag indoor flea and tick treatment. I have not seen a single flea since. Definitely recommend!

By Vivian on Apr 18, 2024

Rated 5 out of 5 stars
By aaleiaa on Jul 18, 2018

Goodbye Hitchhikers!

I noticed that my pup had fleas even though she was on her usual preventative (Revolution) and instantly thought of Capstar to remove the adult fleas as quick as

I noticed that my pup had fleas even though she was on her usual preventative (Revolution) and instantly thought of Capstar to remove the adult fleas as quick as possible. Capstar did the job and I’m a pleased customer! My dog only needed the pill to be covered in a small amount of peanut butter (xylitol free, of course) and she ate it right up! I’ve only ever seen Capstar used in clinical settings (not on my own pup) and am happy to say that it worked with my own animal as well.

By aaleiaa on Jul 18, 2018

Rated 5 out of 5 stars
By lyssy on Sep 7, 2018

Definitely Works!!

I gave this to my two cats and within about 40 minutes I started seeing dead fleas drop off of them. I crushed the pills up and put in their wet food and it worked

I gave this to my two cats and within about 40 minutes I started seeing dead fleas drop off of them. I crushed the pills up and put in their wet food and it worked perfectly fine that way. This is a great product when you want to give your furbabies relief from all the scratching. I've tried everything to get rid of the fleas. I sprayed the house, vacuumed, and used advantage for months and this is the only product that seemed to really kill off the fleas and show results.

By lyssy on Sep 7, 2018