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
2091 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

1170 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 Christine on Mar 21, 2026

Works great on adult fleas only

I’m giving this five stars because it does what it promises. This product does not promise to kill infant fleas or eggs, but at 100% kills the adults. It’s a great

I’m giving this five stars because it does what it promises. This product does not promise to kill infant fleas or eggs, but at 100% kills the adults. It’s a great product in between flee season when you don’t want to give your dogs the really gnarly medication’s. Using this and some safe furniture and carpet sprays has eliminated our infestation


Rated 5 out of 5 stars
By Karen on Mar 15, 2026

Works

Great for fleas, starts working within 30 minutes and lasts for about 17 hours, great start before using monthly flea preventative, good if they have been around

Great for fleas, starts working within 30 minutes and lasts for about 17 hours, great start before using monthly flea preventative, good if they have been around other animals and you not sure, you can tell it’s working as they start scratching if they have any, I keep it handy just incase


Rated 5 out of 5 stars
By Julia on Dec 18, 2025

Works quickly

I think it's great that there is a product to help combat an infested flea problem. Took a friend's dog to the vet for itching and it was because of fleas. They

I think it's great that there is a product to help combat an infested flea problem. Took a friend's dog to the vet for itching and it was because of fleas. They gave a Capstar and started new flea treatment on their Pomeranian and home. It helped a lot!


Rated 5 out of 5 stars
By Elaine on Mar 12, 2026

Quick to kill fleas

Sadie didn't notice the pill in her food. She usually fights me but this tiny pill was 3asy.

Sadie didn't notice the pill in her food. She usually fights me but this tiny pill was 3asy.


Rated 1 out of 5 stars
By Ben on Dec 12, 2025

Does not work

Fleas came back in less than a week, spent hours bathing him in flea medicated shampoo and washing all beds, even flea bombed the house twice, still has them on

Fleas came back in less than a week, spent hours bathing him in flea medicated shampoo and washing all beds, even flea bombed the house twice, still has them on him. Looking for alternatives to greasy, oily topicals that don't absorb and stink


Rated 5 out of 5 stars
By Cheryl on Dec 9, 2025

Capstar is essential!

Often when rescuing a shelter dog, that dog can be infested with fleas. Capstar works within a few short hours to kill the fleas on the dog. I recommend keeping

Often when rescuing a shelter dog, that dog can be infested with fleas. Capstar works within a few short hours to kill the fleas on the dog. I recommend keeping Capstar on hand for rescue dogs, as well as your own pets!


Rated 3 out of 5 stars
By Jilian on Mar 8, 2026

Not Worth the Money

Maybe it helped, maybe it didn’t. If it did help, it certainly wasn’t noticeable.

Maybe it helped, maybe it didn’t. If it did help, it certainly wasn’t noticeable.


Rated 5 out of 5 stars
By Deborah on Oct 30, 2025

Works quickly

Capstar is one of the “safe” medications I can give Maisie when I find a flea on her. It allows me to kill the fleas on her instantly, and then when I treat her

Capstar is one of the “safe” medications I can give Maisie when I find a flea on her. It allows me to kill the fleas on her instantly, and then when I treat her with a topical, she has four weeks protection. Because of her seizure diagnosis she cannot take any of the other oral meds. Capstar is the only safe one.


Rated 5 out of 5 stars
By Courtney on Nov 7, 2025

Works

Clearly chewy has the legitimate capstar because I’ve tried this 3 other times from another store and it never did a thing. I paired this with on guard topical and

Clearly chewy has the legitimate capstar because I’ve tried this 3 other times from another store and it never did a thing. I paired this with on guard topical and it’s been a game changer so far.


Rated 5 out of 5 stars
By Maria on Jan 19, 2026

Great product in a hurry

The comfort it brings to a pupp that is miserable because of nasty little critters

The comfort it brings to a pupp that is miserable because of nasty little critters