Capstar Flea Oral Treatment for Dogs, over 25 lbs, 6 Tablets

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About This Item

Details

  • Won’t rub or wash off, so it won’t leave dangerous pesticide on your pet.
  • Works fast to kill fleas and give your furbaby the relief she needs.
  • Handy small tablet for easy feeding.
  • Use when pets are likely to be exposed to fleas, such as in dog parks, at shows, or other areas.
  • Kills adult fleas and is indicated for the treatment of flea infestations on dogs, weighing 25.1-125 pounds and 4 weeks of age and older.

Ingredients

Instructions

FAQ

Learn More About Capstar From Our Team of Experts

Important Information

Fleas rise to the top of your pet's coat as they die, so consider it a triumph if you start seeing more fleas at first, after treating your pet. If you’re still seeing fleas after application, it may be because your pet has picked up new fleas from the environment, which may include other pets, surfaces and outdoor areas. It may take up to 30 days to break the entire flea life cycle. Additionally, you should also treat sources of new fleas (i.e., carpet, yard, etc.) to ensure complete flea control.

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

24 Customer Questions


Why does this say "Capstar Flea & Tick Oral Treatment" when it doesn't work for ticks?

Answer by JoniADec 10, 2022
I don t see anywhere that it says flea AND tick treatment. I see only flea treatment. Again, comprehension,...

what is the correct dosage for a 60ound dog

Answer by VeronicaJun 30, 2025
It tells you on the box. But I bought these for my dog and they do NOT work at all.

Can I give my dogs a bath after giving them this medicine

Answer by ChewyNov 05, 2018
You can give your dog a bath while using these tablets.

if my dog is over 125lbs can I give him two of these?

Answer by ChewySep 10, 2019
This treatment is indicated for the treatment of flea infestations on dogs, weighing 25.1-125 pounds. If your dog is over 125 pounds, reach out to your veterinarian for dosage amount.

4.1
Rated 4.1 out of 5 stars
2142 Ratings

Customers Mention

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

Ease of Use

75% Positive

Effectiveness

75% Positive

Ingredients

75% Positive

Long-Term Benefits

75% Positive

1188 Customer Reviews



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

Rated 4 out of 5 stars
By Michelle on May 16, 2025

Product itself seems OK, but absolutely crushed during shipping

After a camping trip our dogs ended up with fleas and our vet recommended CapStar to kill them fast. The product itself is fine and seems to be working for most

After a camping trip our dogs ended up with fleas and our vet recommended CapStar to kill them fast. The product itself is fine and seems to be working for most of the dogs, but I am disappointed with how this item was shipped. Order as part of an auto-ship that included a heavy bag of feed. Capstar (and other items in order) had no protection and was smushed in shipping. Lost half a bottle of dog shampoo onto the cardboard and the actual CapStar pills were outside the box upon opening - luckily the foil wrapper appears to have protected them. Chewy logistics - please watch what items are being shipped with heavy feed or wrap the smaller items first!

By Michelle on May 16, 2025

Rated 5 out of 5 stars
By laurie on Jul 1, 2025

Wild Animal Rescue Must Have!!!

One of my best pals runs a non-profit rescue and these are one of her sanity savers!!! The fact that Chewy offered a $30 rebate after spending $100 allowed me

One of my best pals runs a non-profit rescue and these are one of her sanity savers!!! The fact that Chewy offered a $30 rebate after spending $100 allowed me to donate a few more boxes besides those that got me over the threshold to get the extra! Yay for Chewy!!!!

By laurie on Jul 1, 2025

Rated 5 out of 5 stars
By Jann on Oct 20, 2018

Works Great

I do cat and dog rescue. Our rescue has been using this product for years, with great success. It can be used on dogs or cats, as it contains the same ingredients

I do cat and dog rescue. Our rescue has been using this product for years, with great success. It can be used on dogs or cats, as it contains the same ingredients for both. We try to Capstar all incoming and outgoing animals, and then we back up with topical or other oral monthly treatment. What most people do not understand here that are complaining about it not working is that it is only good for approximately 24 hours and must be followed up with a monthly treatment of some other sort. But it certainly helps to get rid of the fleas that are on the animals at that time of treatment, giving almost instant relief. But it is a short-term cure and not meant to be used as a long-term one. We also appreciate the fact that it is very safe, and none of our animals that were treated with it have ever had a reaction except for the itching caused by the fleas biting them as they die.

By Jann on Oct 20, 2018

Rated 5 out of 5 stars
By Kourt on Nov 10, 2017

This works miracles!!!

I purchased this item for my dog and within 20 minutes she was scratching and biting her paws. This product says it works within 30 minutes and it does! She was

I purchased this item for my dog and within 20 minutes she was scratching and biting her paws. This product says it works within 30 minutes and it does! She was scratching and biting because the medicine was taking effect and the fleas on her were dying so they were active and running around I guess. I sat on the floor with her and started to pick the fleas off because they were coming to a surface on her fur and could no longer jump. I highly recommend this item. Ive purchased numerous flea drops and even given her a bunch of flea baths but nothing actually worked like Capstar. I picked 69 fleas off of my dog and found numerous dead fleas on the floor where she was laying.

By Kourt on Nov 10, 2017

Rated 4 out of 5 stars
By Roxana on Aug 9, 2024

Capstar kills fleas

I received this at the perfect time for my Frenchie, Maggie. She has been itching like crazy and was getting dermatitis from flea bites! She only goes outside for

I received this at the perfect time for my Frenchie, Maggie. She has been itching like crazy and was getting dermatitis from flea bites! She only goes outside for short periods of time throughout the day, but the fleas have been bad. I like that this is in a pill form and you can crush it and put in good if needed. She actually ate it whole in a piece of cheese! I also like that it starts working in 30 minutes to kill fleas and kills adult fleas within 4 hours. However, it is only effective for adult fleas and not larvae or eggs. It does not prevent fleas and only works if your pet ha th at the time. It only lasts 24 hours but it is safe and you can give for multiple days. It is important to follow up with a topical or other treatment made specifically for flea prevention. You also need to treat your home and yard if you want to keep fleas away! After I have this to my dog, she was scratching, but this was from the fleas dying off from the treatment. About 30 min to an hour later, she was itching way less and was more comfortable! After 4 hours, I did not see any fleas! I would highly recommend this if you notice adult fleas on your pet! It is very effective along with the other methods mentioned.

By Roxana on Aug 9, 2024

Rated 3 out of 5 stars
By Christopher on Aug 27, 2025

Capstar oral tabs for dogs

This product worked great when I first tried it, along with the Seresto collars. We had no issues with fleas. Unfortunately, this year, I think the fleas are becoming

This product worked great when I first tried it, along with the Seresto collars. We had no issues with fleas. Unfortunately, this year, I think the fleas are becoming tolerant to these products and the insecticides they use. They’re not effective anymore. I hate seeing my guys suffer. They’re not working( tablets or seresto) I’m having great difficulty ridding them of fleas. We’re going to try new products from the vet, Wish us luck.

By Christopher on Aug 27, 2025
Gizmo
Gizmo

Rated 5 out of 5 stars
By dianna on Nov 26, 2024

Capstar works

my vet said he won’t sell capstar because he said it doesn’t work. They would rather sell you those very very expensive flea drops. I have more than one pet and

my vet said he won’t sell capstar because he said it doesn’t work. They would rather sell you those very very expensive flea drops. I have more than one pet and I can’t afford $50 a cat so I use the capstar. it does not kill the eggs, but it will get those fleas off your cat. And I’m looking for instant relief for my cats. Some cats like the light colored ones, the dying fleas are digging in and it makes her run. it’s so funny but I know it’s working., it’s not hurting her. capstar is safe. it’s a good product and it’s a good alternative to some of these flea collars and the drops. You know your cat is irritated like crazy with fleas and you give them cap store and then they’re not. they’re relaxed and they’re happy

By dianna on Nov 26, 2024

Rated 5 out of 5 stars
By DogBluff on Jul 7, 2016

Works every time

Note, only works for 24 hours, but it's a wonderful product to use after spraying your yards and the day that you administer topical flea preventions... Capstar

Note, only works for 24 hours, but it's a wonderful product to use after spraying your yards and the day that you administer topical flea preventions... Capstar is ORAL, and kills all fleas for 24 hours so that your other products have time to kick in. Wouldn't be without it. I've used it once per month during summer time when fleas are so bad outside, due to other stray dogs and/or wildlife "not" being protected, so that brings fleas to our land.

By DogBluff on Jul 7, 2016

Rated 5 out of 5 stars
By Rhea on Aug 30, 2025

Works fast

Ended up with a flea problem first time EVER with my 3 dogs. This was recommended by Chewy staff in chat where I was explaining my situation. This works exactly

Ended up with a flea problem first time EVER with my 3 dogs. This was recommended by Chewy staff in chat where I was explaining my situation. This works exactly as advertised. It works fast!. However, you cannot just administer this - you have to wash all bedding, treat yard and bathe the animals. Flea cycle is not easy to eradicate and you cannot skip steps. Capstar every few days after initial deep clean of everything - including yard was the cherry on top.

By Rhea on Aug 30, 2025

Rated 4 out of 5 stars
By Christine on Jan 15, 2020

Effective - Recommended

I've use this product on and off for years. My large breed dogs have had flea exposure from walks and critters in my yard. I use this product with other adjuncts

I've use this product on and off for years. My large breed dogs have had flea exposure from walks and critters in my yard. I use this product with other adjuncts such as steam cleaning floors, natural repellent spray repellents in my home. It has been a very effective product. No obvious side effects. Consider expert consult for infestations.

By Christine on Jan 15, 2020