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CAPSTAR Blue for Dogs or Cats 2-25 lbs(6 tablets)
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CAPSTAR Blue for Dogs or Cats 2-25 lbs(6 tablets)

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Was: $37.99$28.99You Save: $9.00!(24%)


CAPSTAR Blue a single fast acting dose of Capstar (nitenpyram) 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. 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 PROGRAM, Frontline or Advantage. Then keep CAPSTAR on hand for the times when there is a visible flea re-infestation.

  • Cats (4 weeks of age and older and 2 pounds of body weight or greater)
  • Dogs (4 weeks of age and older and 2 pounds of body weight or greater)
  • Starts killing fleas within 30 minutes
  • Unflavored tablet
  • Safe for pregnant or nursing dogs and cats


Active Ingredient(s): Nitenpyram

Useful Information

Capstar is approved for use in dogs and cats over 4 weeks of age and over 2 pounds of body weight. It is available in packages for dogs and cats 2-25 pounds and dogs 25.1-125 pounds. Choose the correct strength and give 1 tablet as the dose. For pets over 125 pounds give the correct combination of tablets.

Side effects: Side effects that may occur in dogs include Lethargy/depression, vomiting, itching, decreased appetite, diarrhea, hyperactivity, incoordination, trembling, seizures, panting, allergic reactions including hives, vocalization, salivation, fever, and nervousness. Side effects that may occur in cats include 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 .

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

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

Customer Reviews

5 Reviews
80% (4)
20% (1)
0% (0)
0% (0)
0% (0)
60% Recommend this product (3 of 5 responses)
By Gail
Frostburg, MD
September 26, 2016
Capstar convenience
Capstar is very convenient and works well. I use it because it is easier for me than trying to get my cat to accept the liquid flea solution which is applied to her neck.
ProsEasy to administer.
ConsNot long lasting, thus more costly.
By Dee
November 28, 2015
Great relief
I have a feral cat that doesn't allow me to handle her. I can tell when she's itchy, so Capstar is very helpful for a little relief. It's easy to break it up in her food and, although it is only short term, I know she feels good for a little bit.
Proseasy to use, inexpensive
Consshort term, maybe not the healthiest choice since it has to be ingested
By Dorothy Hawks
Clover, South Carolina
July 10, 2015
Quick to give and fast to act
Quick and fairly easy to give to my cats. Mainly needed during the summer months
Prosworks as advertised
Consbitter taste
By Don
June 3, 2011
It works
I don\'t know why some one hasn\'t rated this product before. It works exactly as stated. Fleas start jumping off within minutes. Then follow up with program or like product
May 19, 2011
Capstar was the ONLY way to immediately knock down the massive flea problem we had and give relieft to our pets. Very scary tho as the fleas are dying they dig in and the pets were like in agony for about 20 minutes! Washed them off and it was done.

Customer Q&A

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