Search  for anything...
Capstar

Capstar (Nitenpyram) Fast-Acting Oral Flea Treatment for Dogs 2-25 Lbs, Vet-Recommended Medication Tablets, Flea Tablets for Dogs Start Killing in 30 Minutes, 6 Doses

  • Based on 26,272 reviews
Condition: New
Checking for the best price...
$42.97 Why this price?
Labor Day Deal · 23% off was $55.93

Buy Now, Pay Later

As low as $10 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 9
Order within 15 hours and 12 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 6 Count


Style: Small Dog 2-25 lbs


Features

  • Fast-Acting Dog Flea Medicine: CAPSTAR (nitenpyram for dogs) starts killing adult fleas in just 30 minutes
  • Tackle Flea Infestations Fast: With one dose of CAPSTAR flea medicine for dogs, you can watch the dead fleas fall off your pet
  • Treat Reinfestations Fast: If your pet gets reinfested with fleas, simply give another dose of this flea treatment for dogs 2 to 25 lbs as often as once a day
  • No Prescription Needed: Fast, effective dog flea treatment that's available over the counter
  • Intended Use: CAPSTAR for small dogs (57 mg) is safe for dogs and puppies 4 weeks and older that weigh 2-25 pounds

Description

CAPSTAR for dogs (nitenpyram) is a fast-acting dog flea treatment tablet for use with dogs that starts killing fleas in only 30 minutes. A single dose of CAPSTAR small dog flea treatment kills 90% of adult fleas within 4 hours for dogs. Pet owners and dog owners can give this oral flea treatment as often as once a day to help eliminate a flea infestation and kill fleas quickly. CAPSTAR flea tablets are available for dogs and puppies 2-25 pounds, and four (4) weeks of age or older.

Brand: Capstar


Item Form: Tablets


Scent: Unscented


Item Weight: 11.4 milligrams


Active Ingredients: Nitenpyram


Allergen Information: Gluten Free


Unit Count: 6 Count


Color: Blue


Age Range (Description): All Life Stages


UPC:


Manufacturer recommended age ‏ : ‎ 1 month and up


Item model number ‏ : ‎ CA4920Y07AMZ1


Date First Available ‏ : ‎ July 5, 2015


Manufacturer ‏ : ‎ SERCZ


Best Sellers Rank: #144 in Pet Supplies (See Top 100 in Pet Supplies) #1 in Dog Flea Pills


#1 in Dog Flea Pills:


Customer Reviews: 4.1 4.1 out of 5 stars (26,272)


Brand Name: Capstar


Unit Count: 6 Count


Age Range Description: All Life Stages


UPC: 727804366667 073091033370


Included Components: Capstar Flea Tablets (11.4 mg)


Item Type Name: Elanco Animal Health Capstar Flea Tablet for Dogs 11.4 mg (2-25 lbs)


Manufacturer: SERCZ


Model Number: CA4920Y07AMZ1


Manufacturer Part Number: CA4920Y07AMZ1


Warranty Description: Contact manufacturer for warranty information.


Item Form: Tablets


Scent Name: Unscented


Target Species: Dog


Item Weight: 11.4 milligrams


Allergen Information: Gluten Free


Active Ingredients: Nitenpyram


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • It works with hours
Size: 6 Count Style: Small Dog 2-25 lbs
My dog is on Bravecto oral medication. It only last 2 months and not 3. My poor dog was scratching himself and a few fleas jumped on me. I tried this out of desperation. The fleas on him died within hours. I like that it wear off 24 hours later. This is great if you have a flea infestation brewing on your dog ... show more
Reviewed in the United States on July 4, 2026 by Lisa Sabadin-Nakamura
    • Works Great
Size: 6 Count Style: Small Dog 2-25 lbs
Review Image by amanda ruiz
If you’re looking for something that is a fast flea control and is an effective quality product. Then this is your go to. This is not a preventive, but this will help to kill fleas fast to get them off of your dog to help the itchiness and to keep your animal from being miserable, my dog took this two days and that’s all I needed and they were gone and she’s been fine since. this product is expensive, but it is very effective. You get what you pay for the value for the money. ... show more
Reviewed in the United States on November 26, 2025 by amanda ruiz
    • Hoping
Size: 6 Count Style: Small Dog 2-25 lbs
Okay, so I was doing research to find the cheapest and best pill there is. I finally decided on this brand thought to try it after my research and reviews Day 1- I gave my dog (Mini Aussie -21 lbs) a pill. He didn’t like it at first but with some peanuts butter he ate it. At first he was scratching even crazier after the 30 mins set in. But the next day, he seems better. I don’t see much fleas roaming around, he had a horrible infestation. Nothing was helping but after this pill all I seen is one baby one. But he isn’t scratching anymore and seems to be doing better. I will be doing constant weekly review as this is important for me and for future owners who is doubting about the pill. I also got the cat version but that will be a separate review Update Day 5 - Again, I’m going to be reviewing throughout the time for at least a month. So I gave him a second pill on Day 3. Again he had a horrible infestation so I wanted to make sure all was good and gone. I noticed most of the fleas have died. I do see a couple on him but they are babies. No adults. So the pills isn’t helpful with eggs. This alone helps kill adults fleas but to be extra sure I advise getting the liquid for the fleas and using dawn shampoo/ dog shampoo to combat it and maintain. One year later..so this pill is helpful but if you have a bad flea infestation..it won’t help as much. At one point this was my last restore for my dog before I buy any other expensive flea treatment/vet. This didn’t help with my dog even giving it to him every other day. He was still itchy and uncomfortable. I finally got him the Seresto collar and that helped with our issue completely. ... show more
Reviewed in the United States on September 11, 2019 by Nidia
    • Efficient and radical!
Size: 6 Count Style: Small Dog 2-25 lbs
Review Image by Charlotte Radulovich
When I just adopted my puppy, we went to Sonoma and the person that hosted us didn’t tell us that her house was infested by fleas. I woke up to my puppy screaming in the middle of the night, and I didn’t even need a light, the parasites were crawling all over her. Of course, it happened on a Sunday, and the following day was July 4th, so the three veterinarian and pet stores within a 50 miles radius were closed. Thank GOD for Amazon, that delivered this product. As she was a puppy, she could only have half a dose, and even that was too much. But after 12hours of torture, she eventually got a break from the monsters and was able to sleep. All this to say, after using this product for a year now, as I constantly battle with fleas all year round because both my cats are outdoorsy, this is the most efficient and fast remedy I’ve found for my dog. Although, as efficient as it is, it is not a full remedy against fleas, and has to be completed with anti flea treatments, full house eradication and thorough shower with adequate anti flea shampoos of all your pets. I took one star off because even though this product has done wonders, I feel like over time the fleas have built a resistance against it and is now after a year not as efficient ... show more
Reviewed in the United States on April 26, 2024 by Charlotte Radulovich
    • Works great!!
Size: 6 Count Style: Small Dog 2-25 lbs
Review Image by SoCalMissy
Review Image by SoCalMissy
These capstar caps for small dogs or cats from 2–25 pounds works exactly as it says. I’ve been using this product for many years. These pills work great, within about 20-30 minutes and you can see your animal stopping scratching. And if you use a flea comb within a couple of hours, you’ll get dead fleas in the comb. There is no odor whatsoever. I’m not sure how they taste personally, but the cats or dogs don’t seem to mind the taste especially if you pop it down their throat or give in a treat. Their happiness is a of paramount concern to all of us animal parents. As far as value for the money, they have been raising the cost of this considerably, but if you need it and you must have it immediately, it’s definitely worth spending the money. Otherwise, I’m not sure that it’s a good value for the money. You can give one of these to them every 24 hours if needed, I would also urge you when you’re doing so to use some kind of a spray or something on any furniture and carpet or at least wash them as well at the same time It does get rid of fleas ON them. So making sure they’re bedding is also clean and safe when this is all done is a good thing to do simultaneously ... show more
Reviewed in the United States on July 13, 2026 by SoCalMissy
    • Worth a try
Size: 6 Count Style: Small Dog 2-25 lbs
Chose off the fleas quick, but doesn’t last 30 days you get about 15 days out of it
Reviewed in the United States on August 19, 2026 by Shelley Chapman
    • You won't regret, just get it.
Size: 6 Count Style: Small Dog 2-25 lbs
Literally works as it says. My hopes were very low. BUT for my surprise.... I put my puppy on a white towel and gave him the little pill and since I read on reviews I did stay with him. Within the next 20 minutes I start seeing the fleas jumping out from his body, one after the other. I do recommend to have a towel paper wet with water as well some extra water handy. As soon as you see a flea put some water on top to neutralize, so you will be able to kill it. Otherwise the flea will fly either back to the dog or around your house and then you will have an extra problem and need to fumigate your home inside. Dedicate a good 1 hour at least to get rid of the puppy scratching. YES!!! Very well recommended. And YES!!!! It works very well. ... show more
Reviewed in the United States on August 11, 2026 by Patuka
    • Works to relieve pet irritation
Size: 6 Count Style: Small Dog 2-25 lbs
Seems to provide relief for symptoms. Pricing is quite high for amount of treatments, so docking a star for that.
Reviewed in the United States on March 26, 2026 by BK

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...