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Capstar (Nitenpyram)

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What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Capstar (nitenpyram) kills nearly 100% of fleas in less than 8 hrs. It has no side effects or contraindications. Safe for pregnant and nursing females, and for puppies and kittens 4 weeks and older and 2 lbs. and greater. Cats & Dogs: <25lbs: 1 tablet 11.4mg

Dogs: 25.1 - 125lbs: 1 tablet 57.0mg

Dogs > 125lbs are given an appropriate combination of tablets. PROGRAM Tabs/Suspension contain lufenuron which break the flea life cycle by inhibiting egg development. CAPSTAR Tablets kill adult fleas. The concurrent use of these two products provides an effective flea management system. If a pet currently has a flea infestation, more rapid relief can be accomplished by combining CAPSTAR and PROGRAM to the treatment.

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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.

To give CAPSTAR Tablets, place the pill directly in your pet's 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.




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

Side Effects

Regular use of Capstar may result in certain side effects while inappropriate use may result in adverse reactions. Different animals i.e. dogs and cats experience different side effects to this treatment. The most common side effects in dogs are:

  • Incoordination and trembling
  • Lethargy or hyperactivity
  • Nervousness
  • Seizures
  • Vomiting
  • Diarrhea
  • Itching
  • Excessive panting
  • Inappetence
Capstar for cats may produce the same side effects in cats as well as the following:
  • Fever
  • Salivation
  • Pupil dilation
  • Vocalization
  • Increased heart rate
IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for your pet. See your veterinarian for medical advice and treatment for your pet if you have any concerns.