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Capstar Flea Tablets for Dogs and Cats, 6 Count, 2-25 lbs, Blue

4.3 out of 5 stars 9,562 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Brand Capstar
Item Form Tablet
Active Ingredients Nitenpyram
Allergen Information Yam Free
Age Range (Description) All
UPC 879488271901 802450161825 701179093557 701140798832 802697709330 716688610317 802676141151 716688041524 612016012436 764527053108 798762682489 802680098830 See more
Global Trade Identification Number 00716688041524

About this item

  • Kills adult fleas before they can start an infestation.
  • One convenient tablet starts killing fleas within 30 minutes.
  • Treat flea infestations fast.
  • Safe to give as often as once a day.
  • If you have an infestation, Capstar may be administered once a day until the active flea problem on your pet is cured.
  • Works on dogs, Item comes as a Single Box of 6 tablets
  • Almost all adult fleas will die
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Product Description

Capstar (nitenpyram) is a fast-acting flea treatment tablet for use in dogs and cats that starts killing fleas in only 30 minutes. A single dose of Capstar kills 90% of adult fleas within 4 hours for dogs and 6 hours for cats, ridding your pet of these pesky parasites. Capstar is for dogs, puppies, cats, and kittens 2 pounds of body weight or greater and 4 weeks of age or older.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 4.5 x 0.6 x 2.75 inches; 0.35 ounces
  • Item model number ‏ : ‎ CA4920Y07AM
  • Department ‏ : ‎ Flea & Tick
  • Date First Available ‏ : ‎ July 15, 2004
  • Manufacturer ‏ : ‎ Elanco Animal Health
  • ASIN ‏ : ‎ B005Z6UL1M
  • Customer Reviews:
    4.3 out of 5 stars 9,562 ratings

Product information

Item Weight 0.352 ounces
Department Flea & Tick
Manufacturer Elanco Animal Health
ASIN B005Z6UL1M
Item model number CA4920Y07AM
Customer Reviews
4.3 out of 5 stars 9,562 ratings

4.3 out of 5 stars
Date First Available July 15, 2004
Item Package Dimensions L x W x H 4.61 x 2.72 x 0.55 inches
Item Dimensions LxWxH 4.5 x 0.6 x 2.75 inches
Brand Name Capstar
Target Audience Keyword house-cats, 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.
Country of Origin China
Warranty Description Unspecified
Model Name Old Packaging (Discontinued)
Color Blue
Size Small Dogs, 2-25 lbs
Age Range Description All
Care Instructions Powder
Number of Items 1
Manufacturer Elanco Animal Health
Style Old Packaging
Included Components Tablets
Specific Uses for Product Outdoor, Parasites, Coat

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User Manual (PDF)

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Important information

Ingredients

Active Ingredient: Nitenpyram.

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.

Legal Disclaimer

READ THE LABE and USE AS LABEL INSTRUCTS, Seller is an independent company and distributor of pest control products. Seller cannot warranty or guarantee the safety of the products listed on our website as this solely lies with the manufacturer of the product. Products sold on this site are sold throughout the world and it is impossible to know every licensing restriction or requirements, product registration, etc. for every country, state, county, city, province, etc. It is the sole responsibility of the purchaser and the authorities to provide a license, permit, registration or whatever is required by their local or state authorities to purchase said product. It is also the responsibility of the buyer to verify that items purchased are verified to be shipped, purchased, sold or used within the shipped address assigned. Labels, Usages and MSDS information is available for immediate use on our website.

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Capstar Flea Tablets for Dogs and Cats, 6 Count, 2-25 lbs, Blue
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PriceCurrently unavailable.$64.99$15.85$58.97$51.98$64.99
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Get it as soon as Saturday, Jun 21
Get it as soon as Saturday, Jun 21
Get it as soon as Saturday, Jun 21
Get it as soon as Saturday, Jun 21
Get it as soon as Saturday, Jun 21
Customer Ratings
4.34.3 out of 5 stars9,562
4.14.1 out of 5 stars51,370
4.14.1 out of 5 stars1,938
4.44.4 out of 5 stars50,217
4.54.5 out of 5 stars74,831
4.44.4 out of 5 stars37,889
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Customer reviews

4.3 out of 5 stars
9,562 global ratings

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Customers say

Customers find the flea tablets effective, working within an hour and killing fleas within 30 minutes. The product provides quick relief for pets and is suitable for both cats and dogs, with one customer noting it helped their 13-year-old corgi. While customers consider it good quality and worth the price, they report it only lasts a day or two. Customers disagree on the side effects.

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FunctionalityKills flea infestationItch reliefEffectivenessQualityValue for moneySide effectsLifespan
2,103 customers mention "Functionality"1,671 positive432 negative

Customers find that the flea tablets work quickly, with effects appearing within an hour of administration.

"...The product works in 6 hrs. This is true! Itching stops by then. I'd recommend bathing by at least then, because the fleas just fall off dead!! Yep!..." Read more

"...With the additional methods listed above this product worked fine for me. Just pay attention follow directions and monitor your pets." Read more

"...The pills start to work in about 15 mins. Here is where I admit is almost comical watching the cats...." Read more

"...This also works great in conjunction with monthly prevention - Example - You take your dogs on vacation to a place where there are fleas and perhaps..." Read more

1,475 customers mention "Kills flea infestation"1,132 positive343 negative

Customers report that Capstar tablets effectively kill fleas within 30 minutes, with no fleas visible after treatment.

"I HIGHLY recommend this product!!! It is by far the BEST flea product I have tried for my extremely sensitive hypoallergenic puppy who weighs 7 1/2..." Read more

"...We never had a problem with fleas, none of the other animals got fleas, it was a miracle. This stuff is awesome!" Read more

"...***Anyway, this is a situation-specific medication and will not stop new fleas from getting on your pet down the line...." Read more

"...For me, I had my kitty take one tablet of this med to kill the fleas right away. Then I bought a monthly preventative to apply to him every 4 weeks...." Read more

271 customers mention "Itch relief"209 positive62 negative

Customers report that the flea tablets provide effective relief for their pets, with one customer noting immediate results for their 13-year-old corgi.

"...THIS IS NOT A MONTLY TREATMENT!!!! But this can give IMMEDIATE relief within a few hours to stop the scratching, biting, creepy feeling your pet is..." Read more

"...The product works in 6 hrs. This is true! Itching stops by then. I'd recommend bathing by at least then, because the fleas just fall off dead!! Yep!..." Read more

"...***Anyway, this is a situation-specific medication and will not stop new fleas from getting on your pet down the line...." Read more

"...tell within ten minutes that this pill was working because the flees begin to bite and the dog scratches at first but the next day she was not..." Read more

241 customers mention "Effectiveness"178 positive63 negative

Customers find the flea tablets effective for both cats and dogs, particularly noting their success with feral cats and multiple pets.

"...My dog hasn't gotten sick or had a bad reaction at all with capstar. None whatsoever. I have no fear in giving this to her...." Read more

"...instead of days and my home continues to be flea-free and my pets do not need monthly...." Read more

"FIRST: THIS IS NOT A MONTHLY TREATMENT!..." Read more

"...The fleas will literally fall off right away. They bite your pet, then die. It's easy to administer and has a 24 hour lifespan...." Read more

153 customers mention "Quality"153 positive0 negative

Customers find the flea control product to be reliable and of good quality, with one customer specifically noting its use of high-quality oils.

"...This stuff is awesome!" Read more

"This stuff is fantastic and definitely works as it says it does...." Read more

"...in the warmer months with an ample supply of Capstar and a good quality topical...." Read more

"...Success! She even seems happier, purring up a storm and giving me plenty of loving headbutts...." Read more

630 customers mention "Value for money"313 positive317 negative

Customers have mixed opinions about the flea control product's value for money, with some finding it worth the price while others consider it expensive.

"...I promise though that buying this medicine will prove to be the best money you have ever spent!..." Read more

"...My cats did not go crazy or anything like that. BUT they seemed lethargic and one spit-up twelve hours after the dose and he is NOT a cat to vomit...." Read more

"...5 stars because it does what it says it's supposed to and...its relatively cheap. So you ask...what does it do??..." Read more

"...This first treatment uses raid or another similar harsh/cheap spray...." Read more

105 customers mention "Side effects"69 positive36 negative

Customers have mixed experiences with side effects of the flea tablets, with some reporting no harmful reactions while others note that it is not a preventative product.

"...cat is tiny, neither of them had any problems with the pill and no adverse reactions...." Read more

"...Capstar chemically similar to nicotine which has been used as an organic pesticide for ages, and mammals are minimally effected by a dose that is..." Read more

"...Now, you can dose with this every day, supposedly, but it is a poison...." Read more

"...No majorly noticeable reactions from either of them. They are scratching and cleaning themselves a lot but that's all...." Read more

200 customers mention "Lifespan"48 positive152 negative

Customers report that the flea control product only lasts for 1 to 2 days and is not a long-term solution.

"...Because Capstar ONLY KILLS ADULT FLEAS on your pet and only works for 24-48 hours (a day or two) The young fleas, Flea egg and Larvae remain...." Read more

"...Since this only only works for 24 hours you need to use it in conjunction with a topical treatment like Front line...." Read more

"...It will not completely get rid of a flea problem. Why? Well it only works for 24 hours. Then you need to dose again...." Read more

"...They bite your pet, then die. It's easy to administer and has a 24 hour lifespan...." Read more

so good it should be sanctioned by the UN
5 out of 5 stars
so good it should be sanctioned by the UN
Best chemical warfare for fleas! our cat is a white tiger cat,and even with those $50 drops behind his neck you could spot the fleas in the white sections of his fur in between his colored bands,and on his neck and belly where he’s pure white. The first treatment had him twitching,scratching,nibbling his legs, and rubbing his face from what looked like dozens of disoriented fleas just boiling out of him!! within hours no fleas could be found on his body even with thorough inspection!! I then repeated treatments once every 3-4 days as he picked up new fleas he deposited earlier around the house,and increased vacuuming,and bedding changes . these pills combined with good housekeeping I now only treat him when a flea is spotted which is about once or twice a month. My cat has no noticeable adverse side effects from these pills beyond the first treatment which was from him reacting to the increased flea activity crawling on his body....the drops do not work,and neither did bathing him! these pills where the final solution against fleas.
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Top reviews from the United States

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  • Lucianys lugo
    5.0 out of 5 stars Mascota
    Reviewed in the United States on June 7, 2025
    Verified Purchase
    Muy bueno
    Helpful
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  • Amazon Customer
    5.0 out of 5 stars FOUR INSIDE CATS FIND RELIEF WITHIN FOUR HOURS!
    Reviewed in the United States on July 26, 2018
    Verified Purchase
    FIRST: THIS IS NOT A MONTHLY TREATMENT!
    Some of the reviews do show that people didn't read the full description of the product before purchase and some did not use the product properly after buying it!
    Yepper, I feel your pain. Fleas are a nightmare for pets and for us!
    My ALWAYS inside kitties got an infestation. It only takes ONE pregnant female to be beside your front door (thanks, lady who lets her dog run wild everywhere thinking it's cute!), to pop inside your home. And the cycle begins.
    The eggs are laid ON an animal. Then the eggs fall off as the animal walks/runs around. The eggs must be continuously vacuumed up and disposed of daily for quite a while even after your begin treatment with a monthly approach. They CAN hatch several months later depending on warmth, humidity and so on.
    THIS IS NOT A MONTLY TREATMENT!!!! But this can give IMMEDIATE relief within a few hours to stop the scratching, biting, creepy feeling your pet is exhibiting. When I could not get the monthly sizes of the monthly dosages for different weight cats, I got this to use until the monthly treatments arrived in the proper dosages. The fleas ON the pet die within a few hours using this. Relief is IMMEDIATE then to the fur biting, scratching, gnawing or whatever your pet might be doing. My cats were absolutely NUTS with misery. Last night, they rested easily for the first time in a week or two! And, therefore, so did I.
    Now, you can dose with this every day, supposedly, but it is a poison. The problem I have with this CAPSTAR is the incredibly large variance in weight which an animal can have and still take the same dosage! So, a very small cat and a twenty-five pound dog can take this? I wish I could have a pill which is HALF the dosage if my cats weigh no more than twelve pounds! Why so much poison?
    Anyway, the monthly treatments CAN begin today and seeing how some time has been bought with the almost immediate relief (within four hours for my kitties), I am happy with the purchase. My cats did not go crazy or anything like that. BUT they seemed lethargic and one spit-up twelve hours after the dose and he is NOT a cat to vomit. I can also say that all four cats slept on my bed (yeah, I know, and I washed the bedspread every day after I discovered infestation and am vacuuming the house like crazy!) and I believe the cats gave off a smell resembling insecticide.....I felt a bit nauseated to be honest after several hours up close to them. But at least were no longer in fidgeting, yanking around, scratching, biting fur mode......their livers and my liver, I hope are great filters with no resulting damage...…

    I read that animal shelters use this when new animals come in, before the animals can perhaps be bathed and so on. This product has its use. But REALLY read the directions. It is a poison taken internally.
    16 people found this helpful
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  • V Knows
    5.0 out of 5 stars If your dog is extra sensitive to other flea meds this is great!!!
    Reviewed in the United States on September 8, 2016
    Verified Purchase
    I HIGHLY recommend this product!!! It is by far the BEST flea product I have tried for my extremely sensitive hypoallergenic puppy who weighs 7 1/2 lbs. She is a Havanese and has had a poor reaction to ALL flea and heartworm products from the vet and Walmart. I was recommended to try this product after trying a new groomer, and bringing her to them with fleas. The groomer said she will give her dog (cat if you buy the cat version) one pill of she takes her dog to the dog park for example. She knows there's a chance of fleas from other dogs or due to the environment. The product works in 6 hrs. This is true! Itching stops by then. I'd recommend bathing by at least then, because the fleas just fall off dead!! Yep! And what's awesome is you can literally give your pet another pill next day if fleas recur. I haven't had to within a day. It takes a couple of weeks for them to come back onto my puppy. We live in humid Florida and have a lot grass. My dog is low to the ground and loves to play in it, so she's prone to get fleas and other buggies. This has been a miracle for her. I bathe her once or even twice a week, depends what she gets into and the bathing helps kill fleas since they hate soap and water drowns fleas! :) My dog hasn't gotten sick or had a bad reaction at all with capstar. None whatsoever. I have no fear in giving this to her. Unfortunately, I had given her flea collars, topicals from the vet and Walmart, and oral from the vet (flea and heartworm) and all of these causes hellacious reactions for my dog. So much that when I got the next oral dosage of flea med from the vet, I refused. I've also refused to give her vet heartworm meds. I've had quite a few pets in the past and none have had the level of sensitivity hasn't new puppy to fleas or medicine, so her life is more important than trying a ton of meds because it's what is supposed to work. Capstar works and I bought this on my own with my own money. I don't belong to a company that pays to review things. Get this if your dog gets sick taking these toxic medicines:/ love your animals :)
    10 people found this helpful
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Top reviews from other countries

  • TP.
    5.0 out of 5 stars Amazing product
    Reviewed in the United Kingdom on October 18, 2023
    Verified Purchase
    We have been adopted by a cat that happened to be riddled with fleas and scabs, that was always scratching and cleaning, he was making his little mouth sore with the constant grooming,I took him to vet to get a flea injection but they didn’t do them like my previous vets and told me frontline would work! It hadn’t as we had done it for last 6 months, after reading reviews for Capstar I thought I’d give it a try before going to another vet.
    Each time I tried to give tablet in pieces of ham it just fell out his mouth so I crunched it up in another piece and most of it was eaten, I’m not someone that can just pop it down their throat, within 10 mins he was going mental scratching , all I was thinking was aaggghhhhh get him in garden so fleas can jump off outside, although I did use flea bombs around house the next morning . Within about 40 mins he was hardly scratching and that was the first night he slept so restfully, the next day what a difference no scratching, none of the intense grooming we were used to seeing and his fur was sooo soft ,we have also put a doc marten spot on vial , capstar does exactly what it says, he got a clean bill of health from vets and we’re ready for any new infestation , highly recommend this product
    Report
  • Amazon Customer
    5.0 out of 5 stars Flea tablets
    Reviewed in the United Kingdom on May 22, 2025
    Verified Purchase
    I always use this for my dogs
    Report
  • Sheryl Mainwaring
    4.0 out of 5 stars Additional flea control support
    Reviewed in the United Kingdom on September 14, 2022
    Verified Purchase
    Good product
    Report
  • Amazon Customer
    5.0 out of 5 stars Tablets work
    Reviewed in the United Kingdom on January 2, 2024
    Verified Purchase
    Of all the products we have tried to get rid of dog fleas these tablets are the only one that seems to have an immediate effect. After one tablet dog was free of all fleas when checked the following morning. This was not the case with the spot on treatment which reduced the no caught but did not get rid as it said on instructions would kill fleas within 24 hours and stop eggs hatching. This was not the case but the tablets appear to have been successful and still flea free after 5 days.
    Report
  • Imogen Young
    5.0 out of 5 stars Lifesaver this Summer!
    Reviewed in the United Kingdom on November 5, 2023
    Verified Purchase
    After the Summer of 2023 bringing an infestation of fleas, my indoor only cats suffered loads! First time ive ever had to deal with the critters. Thank god for this product. Worked as intended and never seen my cats get relief so quickly from a medication.

    Advice: 1. make sure you get the right weight size for your cat / dog.
    2. This is a quick fix but does not contain residual. It will unalive the current adult fleas on the animal within 4 hours. You still need to use indorex spray for your home and a spot on moving forward for the animal.
    Report