1. Home > 
  2. Dog Supplies > 
  3. Flea & Tick Meds for Dogs and Cats > 
  4. Oral Treatments & Supplements > 
  5. Capstar Flea Control for Dogs & Cats > 
  6. Capstar Flea Control for Dogs Over 25 lbs (24 Tablets)


Capstar Flea Control for Dogs Over 25 lbs (24 Tablets)

1. Select pet:
2. Select weight:
3. Select count:


Capstar Green an efficient, single, fast-acting dose that kills adult fleas on your dog. If your dog 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 (4 weeks of age and older and over 25 pounds of body weight)

Key Benefits

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


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
26 Reviews
92% (24)
4% (1)
0% (0)
0% (0)
4% (1)
88% Recommend this product (23 of 26 responses)
By Abby's M.
Nashville, TN
Capstar is the best
September 12, 2017
Capstar is our go-to product when the fleas start bothering our dogs. We've been using Capstar for years because of its quick effectiveness. Even though it's pricier than we would prefer, it's worth it to see our dogs comfortable.
By no n.
Frederick MD
Can't detect any reduction in fleas
December 29, 2016
I find no indication Capstar works, although a local vet recommended it. After using about 10 tablets my observation is that fleas are able to survive it.I'd call it ineffective.
By TheHardyCo
Charleston, SC
The only thing that saved us from fleas!
August 8, 2016
Our dog recently acquired fleas while visiting a family member in the country. We have never had to deal with fleas in the decades of pet ownership, and it was AWFUL!! There were fleas everywhere in our house, I would find them on our infant daughter crawling on the floor, jumping in our bed, jumping on our sofa, even on the countertop next to the kitchen sink. I thought I was going to have a nervous break down, nothing was working. Topical treatments, baths, vacuuming, DE powder, borax, soapy water bowl traps, all to no avail! Enter: Capstar pills. Finally we have relief from fleas. Our dog did skip her evening meal voluntarily the first night we gave the pill. I could tell she was not feeling the best. But she didn't get sick, and she didn't skip any other meals afterwards. All in all, I gave four stars because of that, had she not felt a little sick, I would have given five stars. We still used the product and will continue to do so as necessary, and I highly recommend this product to anyone that is dealing with a flea infestation. It saved my sanity and our house!!
By Gabby
pensacola fl
Great stuff
June 12, 2016
You folks are always ON top of your game Thanks for all your support
By Wolf
Killeen, TX
October 31, 2015
I've been using this product for my dogs for years and it works great.
By lucky
like it
July 31, 2015
so simple and working good to prevent and kill fleas and ticks.
By krt
Great Product
May 26, 2015
This product works fast and I think it's a great price.
By Ma
Excellent product
September 11, 2013
Capstar is very effective in controlling fleas and easy to administer (crushed and mixed in wet food)
By Sheila
June 28, 2013
Best flea control product I have ever used .If your pet sleeps with you give pill several hours before bedtime as the fleas become very active as they die off and your pet may scratch more than usual till they are all dead.I use it with topical monthly flea product as needed .
By Sue
Super product
December 12, 2012
Capstar is ideal for those times I must leave a pet at the vet's for a dental or such. They will not pick up any fleas to bring home, nor will they have unwanted chemicals on them for a month as with a spot on flea application.
By 5dogmom
Seattle area
Immediate flea relief in multi-dog household
November 24, 2012
While you are treating your house with Fleago or diatomaceous earth product, Capstar kills fleas on your dogs providing immediate relief especially for your dogs with flea allergies. Highly recommended.
Boston, MA
Great Purchase
November 6, 2012
Fantastic product, super fast delivery and the price was right!
By rodent66
Review for 4 PACK CAPSTAR Green for Dogs over 25 lbs (24 tablets)
November 6, 2012
great price; delivered extra quick; no "oops" surprises
By Sue
Thank goodness for Capstar!
October 24, 2012
We had such a warm winter that we were overrun with bugs, fleas in particular. We tried other products, but they just didn't take care of the problem. Capstar did.
By 5dogmom
4 pack Capstar for Dogs over 25lbs (24 tabs)
August 21, 2012
Capstar worked wonderfully in helping rid my dogs of fleas while I treated my house and got my pack on flea preventatives. Entirely Pets has the best price I can find!
By Joe
August 2, 2012
I have 6 cats and three of them can not be easily captured to apply flea control products.
My solution is to apply flea control to the kitties that I can readily apply medication to then give the other three capstar until one by one I have them all.. There are lots of fleas in this area during summer in particular and it's great to quickly stop a major infestation when I can not get all the kitties at once.
By Jan
Year of the Fleas
June 28, 2012
Excellent product - Provides itiching releif within a few short hours.
By pet g.
Review for 4 PACK CAPSTAR Green for Dogs over 25 lbs (24 tablets)
May 29, 2012
best price around for the best products around
By button
Review for 4 PACK CAPSTAR Green for Dogs over 25 lbs (24 tablets)
April 24, 2012
This product really helps with the fleas onset
By dinz
March 8, 2012
I was having a major problem w/fleas. I have 4 dogs, 3 of which have long fur. Before, all I had to do was wash them, then spray w/adams. But lately, as soon as i;d wash them, the fleas were back, I tried frontline, advantix 2 they did not work, so, I purchased this, and lo and behold, it works. Its expensive, w/4 dogs, but we do what we have to for our babies, right?
By grannamimi
One of my best buys.
January 28, 2012
Most economical way to buy. Works extremely well.
By J S.
It Works!
November 4, 2011
I had tried a small package of this first for our 3 rescue dogs. We have always had several rescued dogs, and this is the first summer we have had so much trouble with fleas. Hot and dry, I guess.

Anyway, these do work. You still have to use a flea preventative, but these will kill the fleas that are on the dog immediately, and to me, the best part is that they are out of the dog's system in 24 hours. If they don't get EVERY flea, you can give another pill the next day. FINALLY, after struggling with this most of the summer, we are flea free. Hurray!!

I was DELIGHTED with the shipping! I ordered heartworm preventative from another source the same day, and it has not arrived YET... and it's been a week. The Capstar from Entirely Pets came in 3 days.... I live in Indiana.

I will definitely order from Entirely Pets again..they have now become Number 1 in my sources for dog supplies.
By kickithilo
Hilo Hawaii
Super product...really works fast
October 25, 2011
I have used capstar for several years now on both my cats and dogs. This product really works and with very little side affects. Mostly with the cats.
By Collie M.
October 13, 2011
I have Collie and am always afraid to give them anything new, as they are sensitive to many drugs. I was having such a flea problem, I had to try something. I was amazed. My Collie are all fine and the fleas just fell off. The down side is that I had to do it again 2 days later, but after that, in conjunction with a topical, I have the problem under control. Great product.
By Denise
Works quickly
June 16, 2009
Capstar works great, and immediately.
By Steven
Like A Charm
June 13, 2008
I have had not negative, harmful responses from my dogs and have been using it for about a year now. You can give them one a day, no problem and start to see a difference in how itchy they are immediately.

Questions and Answers

Capstar Flea Control for Dogs 2-25 lbs (24 Tablets)Capstar Flea Control for Dogs 2-25 lbs (24 Tablets)Reg price: $187.99
Sale price: $143.96
Capstar Flea Control for Dogs Over 25 lbs (6 Tablets)Capstar Flea Control for Dogs Over 25 lbs (6 Tablets)Reg price: $51.99
Sale price: $39.99
Capstar Flea Control Cats 2-25 lbs (6 tablets)Capstar Flea Control Cats 2-25 lbs (6 tablets)Reg price: $51.99
Sale price: $39.99
Capstar Flea Control Cats 2-25 lbs (24 tablets)Capstar Flea Control Cats 2-25 lbs (24 tablets)Reg price: $187.99
Sale price: $143.96