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Capstar

Capstar(nitenpyram) for Dogs Fast-Acting Oral Flea Treatment for Dogs 2-25 lbs, Vet-Recommended Medication Tablets Start Killing in 30 Minutes, 12 Doses

  • Based on 52,627 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Sep 21
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Style: 2-25 lbs


Size: 12 Count


Features

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

Description

CAPSTAR (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 oral flea treatment kills 90% of adult fleas within 4 hours for dogs. Give this oral flea treatment as often as once a day to help eliminate a flea infestation. 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: Allergen-Free


Age Range (Description): All Life Stages


UPC:


Item model number ‏ : ‎ 3135


Date First Available ‏ : ‎ December 2, 2021


Manufacturer ‏ : ‎ Sergeants - Pet Specialty Division


Best Sellers Rank: #112 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 52,627 ratings


Manufacturer: Sergeants - Pet Specialty Division


Item model number: 3135


Date First Available: December 2, 2021


Item Package Dimensions L x W x H: 5.08 x 3.15 x 1.73 inches


Item Dimensions LxWxH: 0.81 x 3 x 4.94 inches


Item Weight: 11.4 Milligrams


Brand Name: Capstar


Target Audience Keyword: Dogs, dogs


Directions: To give Capstar tablets, place the oral tablet directly in your pet’s mouth or hide it in food.


Warranty Description: Contact the manufacturer for warranty information.


Model Name: Capstar Flea Tablet for Dogs


Color: Blue


Size: 12 Count


Age Range Description: All Life Stages


Style: 2-25 lbs


Breed Recommendation: Medium, Small


Included Components: Tablets


Specific Uses for Product: Parasites


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 21

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To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Fast and Effective Flea Relief
Style: 2-25 lbs Size: 6 Count
I recently used Capstar for my two Yorkies (3 lbs and 6 lbs) after spotting signs of fleas, and I am extremely impressed with how well it worked. By the end of the day, both dogs were noticeably more comfortable, and the scratching had stopped. The product was easy to give, caused no side effects, and delivered exactly what it promised — fast relief from adult fleas. I understand it’s a short-term solution and doesn’t provide ongoing protection, but as an immediate “flea knockout,” it’s absolutely worth having on hand. If your pet needs quick relief, especially to stop an active flea problem before starting long-term prevention, Capstar is a lifesaver. I’ll definitely be keeping a box in my pet care kit from now on. ... show more
Reviewed in the United States on August 11, 2025 by Scott Baetz
    • Free killer
Style: 2-25 lbs Size: 6 Count
Does not kill flea eggs, but otherwise works great killing adult fleas
Reviewed in the United States on August 30, 2025 by Norm
    • Read the label
Style: Over 25 lbs Size: 6 Count
It works well for its intended purpose. Just remember that it only kills the fleas for24 hrs. I use this in combination with other flea treatments.
Reviewed in the United States on August 11, 2025 by Deb
    • Quick Relief for furry friends.
Style: Over 25 lbs Size: 6 Count
Been using for immediate assistance in getting rid of fleas. Helps to eliminate them quickly to start longer acting preventive care. Pups have not shown signs of illness anytime after taking medication. They don’t mind the taste and are willing to have the dosage without difficulty.
Reviewed in the United States on August 22, 2025 by Jennadev
    • Didn't work at all for Alaskan Malamutes
Style: Over 25 lbs Size: 6 Count
Review Image by Kimberly W. Kimberly W.
First, let me point out that CapStar is NOT a preventative! It is supposed to kill adult fleas on the dog but it doesn't prevent them from getting fleas again - not does it kill anything but adult fleas, which means you still need something (monthly topical or oral flea medicine) to kill the eggs and the larvae or those will obviously mature into adults and you and your pet are stuck in the vicious cycle. That being said, here is my first and only experience with CapStar. We have never had flea issues until this year. I have two Alaskan Malamutes - one 105 pound "short hair" and one 110 pound long hair. Clearly, they both have the Malamute thick double coat. We usually like K9 Advantix II for flea treatment/prevention. Early this summer, I bought the Amazon brand that has the same ingredients. As K9 Advantix Ii. It arrived with no expiration date and I'm not sure if that's the reason that it doesn't seem to work, that it's not the same formula or perhaps the fleas have become resistant... or it's just an especially overwhelming year for fleas. Either way, I thought by trying this first and THEN putting their prevention on within a day or two would work. I gave them each a CapStar pill, nervously watched for adverse reactions and thanked God they didn't seem to have any issues. It also didn't seem to help the flea situation - they continued scratching and biting as before. Because I didn't want to give them back to back, I waited for about 48 hours before giving another CapStar to each of them. Once again, no reaction but the scratching and chewing hasn't subsided at all nine hours later. In fact, I almost feel like both times, they are actually scratching more after the CapStar tablets?? It makes me wonder if it is actually not killing the fleas but just irritating them and making them more active and angry (or at least more hungry LOL). I really needed this to work and was hoping that in conjunction with a topical preventative, we would be able to both kill AND prevent reinfstation with a two prong attack. Sadly, we are just out more money, time and effort. I should mention that a long side this effort, I treated the bedrooms that have carpet (the rest of the house has hard floors and we have a no-knap, outdoor rug I'm the living room because it can be power washed) Anyway, I sprayed the Vet's Best Flea & Tick Home Spray on the carpet, mattresses and washed bedding & blankets. It's difficult to get every possible location that a flea could be hiding but I was fortunate to be able to see a flea and spray directly on it. The Vet's Best spray killed it in less than 10 seconds. It does say that you can apply it to your dog's coat and rub it in down to their skin. That sounded too unrealistic with their thick coats but because it is natural, smells really nice IMO and obviously works, I think I will still attempt that on most of their cost/body, add Diatomaceous Earth to the floors, dog beds, rugs, etc and THEN try reapplying topical prevention. I just have to decide of I am going to use some of the 8 tubes I have left of the Amazon brand or try something else - might pick up the Frontline Plus that's on sale at Costco tomorrow. ... show more
Reviewed in the United States on September 22, 2023 by Kimberly W. Kimberly W.
    • Ineffective
Style: Over 25 lbs Size: 12 Count
Used this product previously years ago and worked beautifully. We have had an issue not so much with an infestation but just can't seem to fully get rid of these fleas as the topical treatment we tried seemed to be ineffective. Maybe because it was less fleas it didn't seem to work this time around but administered the capstar to my pups and hours later still found live fleas. Nothing out there on the market seems to be effective anymore sadly. ... show more
Reviewed in the United States on August 30, 2025 by Nicole
    • Definitely worth the price
Style: Over 25 lbs Size: 6 Count
Works great! in a short amount of time I noticed the dead fleas. It's especially great if you have an infestation to get under control. I use these first and then I'll use a topical. I really appreciate the fact that none of my animals have had a side effect. It's expensive but definitely worth it
Reviewed in the United States on August 31, 2025 by LH
    • Really works!!
Style: 2-25 lbs Size: 6 Count
After a ton of research, capstar has been one of the best items I've used to get rid of fleas within the hour. It truly does work and it didn't give any reactions to my dogs. About a few hours after we gave the medicine to them, we bathed them with flea and tick shampoo and we haven't seen any fleas since then! Of course they are on a preventative but somehow they got active fleas. BUT this capstar was a lifesaver. ... show more
Reviewed in the United States on August 31, 2025 by Ray

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