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Capstar

Capstar for Dogs (nitenpyram), Fast-Acting Oral Flea Treatment for Dogs Over 25+ lbs, Vet-Recommended Flea Medication Tablets Start Killing in 30 Minutes, 6 Doses

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Availability: In Stock.
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Arrives Thursday, Nov 27
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Features

  • Fast-Acting Flea Treatment: CAPSTAR (nitenpyram) oral flea medicine for dogs starts killing adult fleas in just 30 minutes
  • Tackle Flea Infestations Fast: With one dose of CAPSTAR flea treatment, 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 dog flea treatment as often as once a day
  • No Prescription Needed: Fast, effective flea treatment at home with nitenpyram for dogs that's available over the counter
  • Intended Use: CAPSTAR Oral flea tablets for dogs (57 mg) is safe for puppies 4 weeks and older that weigh 25.1-125 pounds

Description

CAPSTAR flea tablets for dogs (nitenpyram) is a fast-acting flea treatment tablet that starts killing fleas in only 30 minutes. A single dose of CAPSTAR dog flea medicine kills 90% of adult fleas within 4 hours for dogs. Pet parents can give this oral flea treatment and watch the dead fleas fall off your pet. CAPSTAR flea tablets are available for dogs and puppies 25.1-125 pounds, and 4 weeks of age or older.

Brand: Capstar


Item Form: Tablets


Scent: Unscented


Item Weight: 2.72 g


Active Ingredients: Nitenpyram


Allergen Information: Dairy Free


Dog Breed Size: Large


Age Range (Description): All Life Stages


UPC:


Global Trade Identification Number: 87


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 0.63 x 5.75 x 4.5 inches; 0.1 ounces


Item model number ‏ : ‎ CA4925Y07AMZ1


Date First Available ‏ : ‎ July 25, 2014


Manufacturer ‏ : ‎ Vetio Animal Health


Best Sellers Rank: #659 in Pet Supplies (See Top 100 in Pet Supplies) #3 in Dog Flea Pills


#3 in Dog Flea Pills:


Customer Reviews: 4.1 4.1 out of 5 stars 29,982 ratings


Item Weight: 0.096 ounces


Manufacturer: Vetio Animal Health


Item model number: CA4925Y07AMZ1


Date First Available: July 25, 2014


Item Package Dimensions L x W x H: 4.96 x 3 x 0.87 inches


Item Dimensions LxWxH: 0.63 x 5.75 x 4.5 inches


Item Weight: 2.72 g


Brand Name: Capstar


Target Audience Keyword: dogs


Directions: CAPSTAR Tablets should be administered orally, at a minimum dosage rate of 1.0 mg/kg (0.45 mg/lb) body weight, according to the Recommended Dosage Schedule below. Weigh your pet prior to administration to ensure proper dosage. Do not administer to pets under 2 pounds. CAPSTAR may be used as needed, as often as once per day, whenever you see fleas on your pet.


Model Name: Capstar Flea Treatment for Dogs


Color: Green


Size: 6 Count


Age Range Description: All Life Stages


Number of Items: 1


Style: Large Dog 25+ lbs


Breed Recommendation: Medium & Large Dogs


Included Components: Capstar Flea Tablet for Dogs 57 mg


Specific Uses for Product: Parasites


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 27

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.

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Top Amazon Reviews

    • Nuclear option against fleas
Review Image by Ben says Ben says
Ben Says: The war was itchy, but victory was ours. We do our best to keep our pets flea-free with monthly topical treatments, but every now and then a few stubborn invaders slip through. When that happens, we go nuclear — enter Capstar. Roxy and Bernie deserved to be itch-free, and this little pill delivered swift justice. Within hours, the scratching stopped, and the battlefield (our living room) was calm again. The hardest part? Getting the dogs to actually take the pill — they acted like it was a trap from the enemy. But once swallowed, it worked exactly as promised. Quick, effective, and worth keeping in the arsenal for when fleas dare to test your defenses. ... show more
Reviewed in the United States on October 14, 2025 by Ben says Ben says
    • This stuff works
For those who need to know, this stuff works, but it only kills the fleas on the dog. It is not a preventative measure. It is best to use this in conjunction with flea treatment, traps, and sprays
Reviewed in the United States on October 30, 2025 by jonathan libby
    • Kills adult fleas fast
Works fast and good. After using 1 a day for 2days then 1 pill every 2 days after to break flea cycle. Since it says it only kills adult fleas. She hasn’t itched or biting.
Reviewed in the United States on October 24, 2025 by Jessica Araiza
    • It actually worked for our dogs
Works well and will be purchasing again. We ended up with big flea problem this year. We believe they became immune to the previous products we used. The topical treatment no longer worked. So several sprays of yard and home has definitely had impact, and using CAPSTAR, really does a good job of killing the adult fleas on our dogs (3 dogs, one little, one mid-size and one large). Still trying to find right product for outside, and just retreated the inside and gave the last dose. Fleas are almost entirely gone, so we will purchase one more set. ... show more
Reviewed in the United States on September 29, 2025 by Ronald Bertka
    • Didn't work at all for Alaskan Malamutes
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.
    • Works quickly to kill adult fleas
Works quickly to kill fleas. Only lasts for 24 hours and does not kill flea eggs or other pests. Used by veterinarians.
Reviewed in the United States on November 11, 2025 by Julie
    • It worked okay.
Not a big fan. If you are thinking about buying these I would just go ahead and get your animal on an actual flea medicine. It helped us a little bit but we ended up getting monthly medicine instead.
Reviewed in the United States on October 28, 2025 by Kagney Kingery
    • THIS WORKS GREAT!! FLEAS BE VERY AFRAID!
Review Image by planetblonde planetblonde
I keep these on hand because I foster dogs and puppies. I make sure they're always handy In case of a potential emergency flea infestation brought in by a dog that hasn't been cared for properly, or is a stray. The vet had given one of the rescue dogs a capstar. By the time this large floofy boy got to my house and I took him outside, I could see the fleas trying to exit his body off of the top of his head in droves like lemmings jumping over a cliff! Yes capstar works great. It is safer than a lot of the flea pills that come with a black box warning with horrible side effects. I keep them on hand for any flea emergency that might arise. Five stars. ... show more
Reviewed in the United States on November 5, 2025 by planetblonde planetblonde

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