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CAPSTAR Oral Flea Treatment for Dogs, Fast Acting Tablets Start Killing Fleas in 30 Minutes, Medium & Large Dogs (Over 25 lbs), 6 Doses

4.1 4.1 out of 5 stars 50,693 ratings
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Purchase options and add-ons

Brand Capstar
Item Form Tablets
Item Weight 0.32 Ounces
Active Ingredients Nitenpyram
Allergen Information Dairy Free
Dog Breed Size Large
Age Range (Description) All Life Stages
UPC 073091033387

About this item

  • 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 Large Dogs (57 mg) is safe for dogs and puppies 4 weeks and older that weigh 25.1-125 pounds
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4.0 out of 5 stars (4245)
$14.60

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CAPSTAR Oral Flea Treatment for Dogs, Fast Acting Tablets Start Killing Fleas in 30 Minutes, Medium & Large Dogs (Over 25 lbs
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From the brand

From the manufacturer

flea treatment
oral flea tablet
treat and prevent
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Q: What is CAPSTAR (nitenpyram)?

A: CAPSTAR (nitenpyram) is a fast-acting, oral flea treatment for dogs and cats that kills adult fleas before they can start

Q: How long does it take for CAPSTAR (nitenpyram) to begin working on my dog?

A: CAPSTAR (nitenpyram) starts to kill fleas within 30 minutes to give your pet quick relief. One oral tablet kills over 90% of fleas within 4 hours for dogs.

Q: Does CAPSTAR (nitenpyram) kill all types of fleas?

A: CAPSTAR (nitenpyram) kills adult fleas before they can lay eggs. Additional treatments of CAPSTAR (nitenpyram) may be required as existing flea larvae emerge into adult fleas.

Q: Can CAPSTAR (nitenpyram) act as a preventive flea treatment?

A: CAPSTAR (nitenpyram) can be used daily, as needed, to help treat and control an existing flea infestation. A monthly flea preventive is recommended for long-term flea prevention.

Q: What is the best way to administer CAPSTAR (nitenpyram)?

A: CAPSTAR (nitenpyram) is available as an oral flea tablet. Place the pill directly in your pet’s mouth or hide it in food. If you hide it in food, watch closely to make sure your pet swallows the pill. If you are not sure that your pet swallowed the pill, it is safe to give a second pill.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 0.63 x 5.75 x 4.5 inches; 0.32 ounces
  • Item model number ‏ : ‎ CA4925Y07AMZ1
  • Date First Available ‏ : ‎ July 25, 2014
  • Manufacturer ‏ : ‎ Vetio Animal Health
  • ASIN ‏ : ‎ B07PWB9J43
  • Country of Origin ‏ : ‎ Switzerland
  • Customer Reviews:
    4.1 4.1 out of 5 stars 50,693 ratings

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.  Key FeaturesOne convenient tablet starts killing fleas within 30 minutes Treat flea infestations fast for every cat and dog in your home* Kills adult fleas before they can lay eggs and start an infestation One tablet kills 90% of fleas in 4 hours for dogs and 6 hours for cats Safe to administer one tablet per day until flea infestation is resolved Capstar kills adult fleas that may cause flea allergy dermatitis.   *Capstar is for dogs, puppies, cats and kittens 2 pounds of body weight or greater and 4 weeks of age and older.   Dosing  Capstar is available in 2 dosages: Cats and dogs from 2 to 25 pounds (11.4 mg) Dogs from 25.1 - 125 pounds (57 mg)  Administration  To give Capstar tablets, place the oral tablet directly in your pet’s mouth or hide it in food.  Use with Other Medications  If your pet is currently receiving a monthly or longer-lasting flea preventative medication but still becomes infested with fleas, it is safe to administer Capstar to address a flea infestation.    Capstar may also be used together with other products, including heartworm preventatives, corticosteroids, antibiotics, vaccines, deworming medications, and shampoos.   Re-infestations  Capstar kills adult fleas on dogs and cats, offering quick relief for your furry friend. While Capstar works fast to kill adult fleas and alleviate a current infestation, a subsequent preventative solution is recommended to prevent future re-infestations from any existing flea eggs and larvae in the environment. If you notice more fleas have found their way onto your dog or cat in the days following treatment, continue treating your dog or cat with Capstar with up to one dose per day.  Important Safety Information  Capstar is safe to use in puppies and kittens 4 weeks of age and older, and 2 pounds of body weight or greater. Always read, understand, and follow the label and use directions.

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Top Brand: Capstar

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Important information

Safety Information

Keep out of reach of children

Ingredients

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.

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Price$39.98-30% $23.97
List: $34.00		$54.99$16.99$27.97$18.84
Delivery
Get it as soon as Thursday, Mar 13
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Customer Ratings
4.14.1 out of 5 stars50,693
3.83.8 out of 5 stars2,478
3.93.9 out of 5 stars1,008
3.93.9 out of 5 stars1,240
4.34.3 out of 5 stars15,380
4.64.6 out of 5 stars25,146
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Customer reviews

4.1 out of 5 stars
50,693 global ratings

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Customers say

Customers appreciate the product's fast-acting and convenient nature. They find it effective within 30 to 45 minutes. The quality and ease of administration are also praised. However, some customers have mixed opinions on its effectiveness, flea control, value for money, safety, and scratching.

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Fast actingProduct qualityEase of administrationEffectivenessFlea controlValue for moneySafetyScratching
360 customers mention "Fast acting"344 positive16 negative

Customers appreciate the product's fast-acting flea treatment. It starts working within 30 minutes and kills fleas within 45 minutes. While frequent applications are needed, it's convenient and effective.

"...They start working in 30 minutes and it's so easy to administer to my dog. Couldn't ask for a better solution to the flea problem. Highly recommended!" Read more

"...It certainly does its job quickly. However, I do wish it had additional flea prevention benefits...." Read more

"...It's incredibly fast-acting, noticeable results in no time. Also, it's so easy to administer without any fuss...." Read more

"This is an excellent product. It starts working within minutes. My very very recommends it." Read more

308 customers mention "Product quality"308 positive0 negative

Customers are satisfied with the product quality. They say it's a reliable and effective flea treatment for dogs. Many mention that it works even with just one pill. The pills arrived in good condition without any broken or open packaging.

"This product is terrific. It's so convenient to use and incredibly effective in getting rid of fleas...." Read more

"...It's a solid choice overall, just remember to also consider a preventative solution." Read more

"...Would definitely recommend to anyone looking for something reliable and worth every penny. I’m beyond satisfied and would definitely buy again." Read more

"Great product. Killing fleas within 30 minutes and works for about a day. You must also do flea control because the eggs are in their beds...." Read more

226 customers mention "Ease of administration"214 positive12 negative

Customers find the pet pest control product easy to administer. It comes with 12 doses, is convenient, and accessible. They mention it's a simple tablet, no mess, and no residue.

"...They start working in 30 minutes and it's so easy to administer to my dog. Couldn't ask for a better solution to the flea problem. Highly recommended!" Read more

"...It's super easy to administer and the best part is that no vet prescription is needed. Gave my dog a pill last night and he already has relief!..." Read more

"...Also, it's so easy to administer without any fuss. An excellent treatment for furry friends struggling with flea problems. Highly recommend!" Read more

"...It’s so easy to give and works really well—no messy application or waiting for it to dry...." Read more

1,893 customers mention "Effectiveness"848 positive1,045 negative

Customers have mixed opinions about the product's effectiveness. Some say it works well for medium and large dogs, while others mention it doesn't work within 30 minutes as advertised, is only effective for a short time, and doesn't work on small dogs.

"Works but doesn't last long. You pretty much have to give it every other day because it wears off so soon." Read more

"...I was so surprised how sickly these seemed to work! Next day and I haven't found a single flea and no irritation...." Read more

"First, let me point out that CapStar is NOT a preventative!..." Read more

"I've been using the Capstar treatment for my dog and the results have been impressive!..." Read more

1,224 customers mention "Flea control"743 positive481 negative

Customers have mixed opinions about the flea control. Some find it effective for killing adult fleas and treating re-infestations quickly. Others mention that it doesn't prevent fleas from coming back or kill eggs or larvae, and that their dog still has fleas under control even after using this product.

"...It's so convenient to use and incredibly effective in getting rid of fleas. The fast-acting nature of these tablets is a real game changer...." Read more

"...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..." Read more

"...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,..." Read more

"I recommend this product if you're seeking a fast-acting flea treatment for your pet. It certainly does its job quickly...." Read more

651 customers mention "Value for money"199 positive452 negative

Customers have different views on the product's value for money. Some find it a worthwhile purchase and effective in fighting fleas, while others consider it expensive and not worth the cost. The product is praised for its speed and effectiveness in fighting fleas. However, some customers report side effects like drooling, stumbling, weakness, seizures, hives, excessive panting, and hives.

"...I thought the price was high, but the quality totally outweighed the cost!" Read more

"...However, I do wish it was a bit more affordable. Regardless, it's a fantastic product for pet owners looking for an effective flea treatment." Read more

"...recommend to anyone looking for something reliable and worth every penny. I’m beyond satisfied and would definitely buy again." Read more

"100% recommend. It’s a bit expensive but it works so good. Adoptee two cats from a pound and along came the fleas...." Read more

310 customers mention "Safety"201 positive109 negative

Customers have mixed opinions about the product's safety. Some say it's a safe choice for dogs and puppies, and the best part is no vet prescription is needed. Others mention it made their pets sick and gave them diarrhea for an entire day and a half.

"...Gave my dog a pill last night and he already has relief! Practical and effective, I recommend it to all pet owners struggling with flea issues." Read more

"...The smell is super strong and toxic for humans and animals, so you have to leave for a few hours...." Read more

"...Also, it's so easy to administer without any fuss. An excellent treatment for furry friends struggling with flea problems. Highly recommend!" Read more

"...couldn’t get us in for 2 weeks so we bought this and it has been a sanity saver!!" Read more

214 customers mention "Scratching"102 positive112 negative

Customers have mixed opinions about the product's ability to reduce scratching. Some say it stops their dogs from scratching within an hour and helps them sleep peacefully. Others mention that some pets still itched and biting after using the product.

"...also didn't seem to help the flea situation - they continued scratching and biting as before...." Read more

"...Next day and I haven't found a single flea and no irritation. I thought the price was high, but the quality totally outweighed the cost!" Read more

"...About 8h post pill, she’s still a little itchy, but I cannot find any fleas...." Read more

"...Dogs aren’t scratching and biting themselves. I feel happy that my dogs have some relief." Read more

Convenient and Works Great
5 out of 5 stars
Convenient and Works Great
We’ve always used topical flea treatments, but this oral option has been a game-changer. It’s so easy to give and works really well—no messy application or waiting for it to dry. Our dog has been flea-free ever since, and we’re definitely sticking with this from now on!
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Top reviews from the United States

  • ReviewedByLuLu
    5.0 out of 5 stars Convenient and Works Great
    Reviewed in the United States on March 4, 2025
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    We’ve always used topical flea treatments, but this oral option has been a game-changer. It’s so easy to give and works really well—no messy application or waiting for it to dry. Our dog has been flea-free ever since, and we’re definitely sticking with this from now on!
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    ReviewedByLuLu
    5.0 out of 5 stars
    Convenient and Works Great

    Reviewed in the United States on March 4, 2025
    We’ve always used topical flea treatments, but this oral option has been a game-changer. It’s so easy to give and works really well—no messy application or waiting for it to dry. Our dog has been flea-free ever since, and we’re definitely sticking with this from now on!
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  • Kristen
    5.0 out of 5 stars Works so fast!
    Reviewed in the United States on February 14, 2025
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    All three of my dogs had gotten into fleas outside. I was so surprised how sickly these seemed to work! Next day and I haven't found a single flea and no irritation. I thought the price was high, but the quality totally outweighed the cost!
    5 people found this helpful
    Helpful
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  • DJ
    4.0 out of 5 stars It would be better to go to the vet
    Reviewed in the United States on December 24, 2024
    Style: 2-25 lbsSize: 6 CountVerified Purchase
    Works but doesn't last long. You pretty much have to give it every other day because it wears off so soon.
    12 people found this helpful
    Helpful
     Report
  • Joseph Owen
    5.0 out of 5 stars Fast and Effective Flea Treatment
    Reviewed in the United States on February 11, 2025
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    This product is terrific. It's so convenient to use and incredibly effective in getting rid of fleas. The fast-acting nature of these tablets is a real game changer. They start working in 30 minutes and it's so easy to administer to my dog. Couldn't ask for a better solution to the flea problem. Highly recommended!
    2 people found this helpful
    Helpful
     Report
  • Kimberly W.
    1.0 out of 5 stars Didn't work at all for Alaskan Malamutes
    Reviewed in the United States on September 22, 2023
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    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.
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    Kimberly W.
    1.0 out of 5 stars
    Didn't work at all for Alaskan Malamutes

    Reviewed in the United States on September 22, 2023
    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.
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    181 people found this helpful
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  • sheryel
    3.0 out of 5 stars Fast-Acting and Vet-Approved
    Reviewed in the United States on November 29, 2024
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    I recommend this product if you're seeking a fast-acting flea treatment for your pet. It certainly does its job quickly. However, I do wish it had additional flea prevention benefits. It's a solid choice overall, just remember to also consider a preventative solution.
    6 people found this helpful
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  • Emily V
    5.0 out of 5 stars Remarkable Relief for My Furry Friend
    Reviewed in the United States on February 1, 2025
    Style: 2-25 lbsSize: 6 CountVerified Purchase
    I've been using the Capstar treatment for my dog and the results have been impressive! It's super easy to administer and the best part is that no vet prescription is needed. Gave my dog a pill last night and he already has relief! Practical and effective, I recommend it to all pet owners struggling with flea issues.
    2 people found this helpful
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  • Kelsey Seyfried
    5.0 out of 5 stars Impressed by the Fast Action
    Reviewed in the United States on February 27, 2025
    Style: Over 25 lbsSize: 6 CountVerified Purchase
    This product is really great for our pooch. It's incredibly fast-acting, noticeable results in no time. Also, it's so easy to administer without any fuss. An excellent treatment for furry friends struggling with flea problems. Highly recommend!
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