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  6. Capstar Flea Control for Dogs 2-25 lbs (24 Tablets)


Capstar Flea Control for Dogs 2-25 lbs (24 Tablets)

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Capstar Blue an efficient, single, fast-acting dose that kills adult fleas on your pet. If your pet gets re-infested with fleas, you can safely give another dose as often as once per day. To administer Capstar tablets, place the pill directly in your pet's mouth, or hide it in food. If you choose to hide the tablet 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 administer a second pill.

We recommend you follow up Capstar treatment with a monthly flea control product such as Frontline Plus and keep Capstar on hand for the times when there is a visible flea re-infestation.


Dogs and cats (4 weeks of age and older and 2-25 pounds of body weight)

Key Benefits

  • Starts killing fleas within 30 minutes
  • Unflavored tablet
  • Safe for pregnant or nursing dogs and cats


Active Ingredient


Useful Information

View Capstar product information.


A single dose of Capstar should kill the adult fleas on your pet. If your pet gets re-infested with fleas, you can safely give another dose as often as once per day please refer to the package insert for complete information.


To give Capstar Tablets, place the pill directly in your petís mouth or hide it in food. If you hide the pill 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.

Treat all infested pets in the household. Fleas can reproduce on untreated pets and allow infestations to persist.

Quick Tips

  • Capstar can be used with lufenuron to provide a Flea Management system. The two products, when used together, kill adult fleas and prevent flea eggs from hatching.
  • Capstar kills adult fleas that cause flea allergy dermatitis (FAD).
  • If you have questions about flea control or medical problems associated with flea infestations, please consult your veterinarian.


Pets may scratch as a result of the fleas dying, but it is a temporary condition and not a reaction to the medication itself.


Not for human use. Keep this and all drugs out of the reach of children.

Storage Directions

Store this product at room temperature. Keep out of the reach of children and pets.

Possible Side Effects


Lethargy/depression, vomiting, itching, decreased appetite, diarrhea, hyperactivity, incoordination, trembling, seizures, panting, allergic reactions including hives, vocalization, salivation, fever, and nervousness.


Hyperactivity, panting, lethargy, itching, vocalization, vomiting, fever, decreased appetite, nervousness, diarrhea, difficulty breathing, salivation, incoordination, seizures, pupil dilation, increased heart rate, and trembling. There are no known drug or food interactions .

Customer Reviews

Review Summary
34 Reviews
85% (29)
9% (3)
6% (2)
0% (0)
0% (0)
94% Recommend this product (32 of 34 responses)
By Marnie149
Easy to give to my dogs
April 10, 2018
I purchased as I was told by a friend how well this works. It seems to be working very well, my dogs have had no signs of fleas. Just give them the pill hidden in a treat, not fleas, happy dogs!
By Abby's M.
Nashville, TN
Only flea control we use
September 12, 2017
After our cats reacted terribly to flea control applied to their skin (it was like they were being poisoned), we opted for Capstar. Not only does it work quickly, but there have been absolutely no side effects. Granted, it doesn't work for weeks at a time, and it's expensive, but it's important that our animals be comfortable and safe, so it's worth the cost. We've been using it for years and it's the only flea control we choose.
By Divanor
Miami, FL
Capstar is the best
June 5, 2017
This is a must have product in the summer months. It works great with no noticable side effects.
By Bye F.
Love this
May 11, 2017
Bought this last year for our 2 cats when nothing else was working. It worked great! Bought again this year as a preventative. Once a month and no fleas. We are a happy family :)
By Elled
Excllent product, I use weekly!
January 19, 2016
Because one of my dogs - a Maltese - had an issue with fleas. I use this weekly on all of my three small dogs. It keeps the fleas at bay. Highly recommended!
By cathouse
rocky mount, va
best price available
November 22, 2015
Works great on killing fleas, however some of our cats have had panic reactions so we split the pills to reduce dosage.
By Bob
Great flea treatment
September 16, 2015
Since we began using Capstar we have had no problems with fleas. Gets rid of them fast with the lowest exposure to chemicals for the dogs. Highly recommend.
By sandu
capstar the best treatment for flea
September 12, 2015
unfortunetaly i bought the wrog item for my dogs over 25lbs but even though it was efficient ; within 15 min. i have seen the result .this treatment needs a complement for best results ( unfortunetaly), but it's the best without a veterinary prescription so i recomand it for all the people in hurry
By Rawley
Long Beach, CA
Good-bye Fleas
August 18, 2015
This product works so fast and is so effective, I am amazed. I have had little to no luck applying topical flea treatments, so this product is an essential for me.
It kills fleas within a few hours of treatment, and the pill is so small, it's easy to get my cat to take.
Of course I wish it lasted longer, but it's so quick and effective, I love it!
By cb
helpful product
May 26, 2015
Capstar works great as an addition to monthly flea treatment. I first received it from my vet.
In Florida even though my cats do not go outdoors they do go onto a screened porch and some fleas can get in. Capstar has helped me to control fleas in the constant heat and humidity of south central Florida. I use it every two weeks.
By Kitty K.
Great Product
March 9, 2015
Have been using the CAPSTAR pills on my dogs and cats for 3 years. The fleas die the very first dose.
By Fleek
Ocala, Fl
Great product
June 6, 2014
We have been ordering CAPSTAR blue for several years for our little Pekingese dog. We had always had problems with fleas even while using a good monthly treatment. We have found that an occasional CAPSTAR tablet extends the effectiveness of the monthly dramatically, which keeps us and our dog very happy. I make sure we always have a supply of CAPSTAR on hand.
By Frisky
Miami fl
Very good product
May 19, 2014
Within a few hours, all fleas are dead on dog/cat. Then monthly flea product of choice works more efficiently.
I am in a cat rescue with TNR so immediate flea treatment is necessary.
By gator
March 30, 2014
I really hate to use poisons to kill dogs don''t behave normally for 24 hours after the pills. My dogs pant for hours after the capstar.
By Iggy
Central NJ
Got the job done
December 9, 2013
Our vet recommended Capstar when we were facing a flea infestation (despite having used Frontline Plus monthly).

Entirely Pets had the best price (this is an expensive product no matter where you go) and fast shipping.

The Capstar can be used on dogs and cats (we have both) and it worked just as fast as the package said (within 30 minutes).
By Lori
This stuff works!
November 21, 2013
I have two indoor cats and they used to be bothered by fleas all the time. One of the cats is allergic to the saliva of the fleas. The vet recommended Capstar and to give it to them monthly. Since we have been doing this, they have not had any problems.
By rhomp
wonderful product to use with frontline
March 17, 2013
we use this product for instant relief from fleas along with the frontline products. it works immediately and we use it often as we have been fighting fleas for a few months now. our next step is to bomb the house as we must still have fleas somewhere in the house
Lothian, MD
Works Everytime
February 6, 2013
We use this product on several of our cats in combination with Revolution topical for a flea infestation. Cats are extremely comfortable after using. The only problem we've found is that they scratch more for awhile. Then all is back to normal until the next hatching. We are using twice weekly as directed. Highly recommend.
By jimeeo
Eustis, Florida
Great product
January 23, 2013
I had a recent flea infestation after taking my four cats outside. I spent many $$$ and no results. So after reviewing all info on this product on several different posts I tried it. I pushed this tablet down each of their their throats and confined them to a bathroom with a tile floor all at one time. After thirty minutes the cats started jumping. In revenge, the fleas were biting and then jumping off the cats dead. After two hours I let the cats out and saw all the dead fleas on the tile floor. Now that made me a believer in CAPSTAR.
By Nancy
Never without this product
May 28, 2012
We have used Capstar for several years for our Westie. Whenever we visit the dog park or any park we give one of the Capstar pills to make sure he doesn't keep fleas that might have gotten on him.

This product is a comfort for our dog and for us as well.
By Groomer G.
Quinlan, TX
April 12, 2012
I have a Groom shop in Texas. I love the capstars for many reasons. One it helps with not spreading fleas in the shop. It works fast!! I can give it to all the dogs and cats. Its safer than Dip plus no smell. It's not that hard to give and if we have a difficult Dog normally cheese or peanut butter does the trick. If all else fails I crush it and mix with a small amount of water and put it in a suringe. Most of my clients prefer it over a stinky Dip. It's just a great product all around. Only thing I wish is it worked on ticks. Other than that it's awesome. Oh and they can use it with the regular flea treatments instead of waiting a week so the dogs won't get reinfested.
By kat
savannah, ga
January 30, 2012
Works great to get rid of adult fleas for 24 hours. It helps get a handle on fleas in addition to topicals.
By meme
Warren MI
great product
January 27, 2012
Bought Capson after reading the reviews. Our cats were infested with fleas this year. Capson gave them immediate relief. We didn't want to use the spot medication or a flea collar because my one cat had scratched her neck badly. I thought it would sting. This was the best option I had to get rid of these fleas. It works!
By Barb
southern Florida
Does what it Says
January 12, 2012
The product claims to kill live fleas on your pet within minutes and it does that. However it does not kill the eggs or larvae or fleas in the environment such as in your carpets or in dog bedding. I have had to give a pill about everyday until the flea problem was under control. I just purchased Program once a month flea prevention in pill form to use with the Capstar. Program prevents flea eggs from hatching. I'm hoping between the 2 products no more fleas. I should mention that we are in a warm climate year round.
January 10, 2012
I bought this product to help get ahead of a flea problem with my indoor only cats. Once the fleas were inside, it was taking FOREVER to get rid of them again. Capstar is a little extra nudge to get them the heck out of your life! Anything that will do that is top notch in my book!!!
By Cheri
Marshall, AR
October 31, 2011
My sons house has 5 dogs and 1 cat. It got infested with fleas. I gave Capstar a chance after all the other products I tried and they failed, but Capstar did what it said it would do. All fleas gone. I would recommend this to everyone..
By artistpowell
good, however...
October 24, 2011
Capstar works fast, but the effects pass so quickly that fleas can bite even later the same day. It would be good if the label said how long its supposed to work. I used it with Program, but that only kills the eggs, so its really a process. In self defense I got Frontline too, which vaguely worked. Gads. I'm trying not to bomb the house and yard. I really hate fleas.
By Scott T.
Rose City, MI
This stuff is amazing!!!!!!
October 20, 2011
We have 1 dog and 6 cats, gave them all Capstar 2 and a half hours ago, they scratched like crazy about a half hour to an hour after, the fleas were crawling off them and dying. It was the craziest thing we ever saw, now all my animals are resting and hardly itching at all. It is the greatest stuff i have ever used, we are also using Program along with it. I recommend this product to anyone who has a pet with a flea problem. Seems our pets will have a peaceful nights sleep tonight.
By june
new jersey
best ever
October 18, 2011
works unbelivably awesome have fleas super bad this year capstar is working great
By lulu
October 13, 2011
I have a rescue and have dogs transport from the south. They usually come with fleas. I started using Capstar about 4 years ago and now before the new pups enter the rescue they are treated with Capstar. You can see the fleas dropping off them and along with K9 Advantix II keeps my rescue flea free.

Questions and Answers

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