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
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Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, May 12
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
Age Range (Description): All Life Stages
UPC:
Is Discontinued By Manufacturer : No
Item model number : CA4920Y07AMZ1
Date First Available : July 5, 2015
Manufacturer : SERCZ
Best Sellers Rank: #314 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 (55,791)
Brand Name: Capstar
Age Range Description: All Life Stages
UPC: 727804366667 073091033370
Manufacturer Part Number: CA4920Y07AMZ1
Model Number: CA4920Y07AMZ1
Unit Count: 6 Count
Included Components: Capstar Flea Tablets (11.4 mg)
Manufacturer: SERCZ
Item Type Name: Elanco Animal Health Capstar Flea Tablet for Dogs 11.4 mg (2-25 lbs)
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:
Tuesday, May 12
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 6 Count
Style: Large Dog 25+ lbs
My dog had been dealing with skin irritation and constant scratching for a couple of weeks, especially around her tummy. Nothing seemed to give her relief, and the red spots were getting worse. After using Capstar, I started seeing results within 24 hours. The redness on her tummy became much lighter, and she stopped scratching as much. You could tell her skin was finally starting to heal. I really appreciate how fast-acting this product is—it made a noticeable difference in just one day. Definitely effective and worth it if your dog is struggling with fleas and related skin irritation. Would absolutely use again if needed!
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Reviewed in the United States on April 2, 2026 by Carmen L
Size: 6 Count
Style: Large Dog 25+ lbs
10/10 recommend, it works great. My four dogs were going to itchtown USA pretty much non stop. I spent $90 buying pet armor topical treatments for both my dogs and cats and it didn’t work at all. Both still had fleas and honestly feels like it made it worse. I got pretty desperate and tried this stuff and they itched a little bit for the first and second day but they pretty much have stopped all scratching, and over grooming. Also when I gave them a bath I didn’t find any fleas lol it was like they’d all fallen off? Pretty wild. Either way, use this stuff, bathe your animal the next day and change all bedding everywhere/vacuum everything and you’ll be good to go.
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Reviewed in the United States on April 7, 2026 by Payton
Size: 6 Count
Style: Small Dog 2-25 lbs
My go to flea medicine for my small dogs. Very easy for them to take, affordable and works great. My dogs love being outside when the weather gets nice, this medicine keeps them protected and it lasts. It's rare I see a flea on them, but if I do I know that will be the only flea because the medicine won't let any others appear. Capstar brand is great for dogs and cats.
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Reviewed in the United States on April 12, 2026 by Gail
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
Size: 6 Count
Style: Large Dog 25+ lbs
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 ingrediens 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, it 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 were 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 along 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 in 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 Vet's Best 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 coat/body, add Diatomaceous Earth to the floors, dog beds, rugs, etc and THEN try reapplying topical prevention. I just have to decide if I am going to use some of the 8 tubes I have left of the Amazon brand or try something else - I might pick up the Frontline Plus that's on sale at Costco tomorrow. *Edit* - I called my vet after posting this review to ask if Frontline Plus was working on fleas in our area (mid-Michgan in lower peninsula). I also spoke with the vet directly when taking this guy (in photo) in for his appointment that fall. The vet said that fleas had become more resistant to topicals and developed a thicker exoskeleton. In her opinion, she said the only thing that was working was oral prevention (like Nexgard). Ultimately, that's what we did - put them both on Nexgard until the cold Michigan winters helped kill the outdoor population and we could all breathe a sigh of relief. We never returned to topicals since this experience but have friends with multiple dogs (2 German Shepherds and a long hair Alaskan Malamute) who continued to use Advantix II (the name brand version) directly from their vet and said they haven't experienced issues. Hope my struggle and experience was helpful in some way but no matter which way you go, I think you can skip the unnecessary step of Capstar and not only save a bit of money but save your dog from extra chemicals that don't offer any real relief or added benefit.
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Reviewed in the United States on September 22, 2023 by Kimberly W.
Size: 12 Count
Style: Large Dog 25+ lbs
10/10. The fleas literally started dropping off my dogs. We got a random infestation on 4 dogs and they were miserable to say the least. Within a few hours they were already itching so much less and we were seeing the benefit of the medication. I will be buying again to have some just in case for the future!
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Reviewed in the United States on April 3, 2026 by Sabrina
Size: 6 Count
Style: Small Dog 2-25 lbs
My two pups somehow got fleas and so I purchased this product but it didn’t get rid of them. I purchased it a second time and it seemed to have helped with the flea issue.
Reviewed in the United States on April 15, 2026 by Tagrid
Size: 6 Count
Style: Large Dog 25+ lbs
This worked great and started working almost immediately. It was easy to give my dog and helped really fast. I was very happy with how quickly it kicked in.
Reviewed in the United States on April 8, 2026 by Madison Rushe