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Flea & Tick

Capstar for Dogs & Cats

Brand: Elanco

Capstar is a fast-acting oral medication containing nitenpyram that rapidly eliminates adult fleas on dogs and cats to provide immediate relief from infestations.

This product is intended for dogs and cats.

OTCDogs & Cats

Overview

Capstar, manufactured by Elanco, is a specialized oral tablet designed for the immediate treatment of flea infestations in dogs and cats. Unlike topical preventatives such as Frontline Plus, which are intended for long-term monthly control, Capstar serves as an acute-care solution. Its active ingredient, nitenpyram, works by targeting the nervous system of adult fleas, causing them to die rapidly within 30 minutes of administration, providing near-instant relief for your struggling pet. Because it does not leave a residual protective layer on the skin, it is frequently used to manage sudden, heavy flea burdens that require quick intervention before applying longer-acting products like Revolution Plus. Veterinary professionals often recommend it for pets coming into a clinic with visible flea dirt or active biting to prevent environmental contamination within the facility. For ongoing management of flea populations, it is standard practice to follow up with a preventative like Bravecto Topical for Cats or Frontline Plus for Dogs to ensure that newly emerging fleas are controlled over the following weeks. While it is highly effective at killing the adults currently on the animal, it does not possess ovicidal or larvicidal properties, meaning it will not address the entire life cycle of the parasite located in the home environment. Therefore, consistent environmental cleaning and the use of long-term preventatives are essential components of a holistic pest control strategy. Capstar is a safe, non-prescription option that has been rigorously tested for use in both feline and canine patients, making it a staple in many households prone to intermittent flea challenges.

What It's For

  • Immediate flea elimination: Quickly kills existing adult fleas currently biting your pet.
  • Pre-boarding treatment: Used to ensure pets are flea-free before entering kennel or grooming environments.
  • Heavy infestation management: Acts as a 'knockdown' agent to provide relief while waiting for long-term preventatives to take effect.
  • Post-exposure cleaning: Ideal for pets that have recently returned from high-risk areas where flea exposure is likely.

How To Use

Capstar is administered orally as a single-dose tablet. To ensure the medication is properly ingested, you can hide the tablet in a small piece of food, a treat, or directly at the back of the pet’s tongue to encourage swallowing. The product can be used as often as once per day if the animal is re-exposed to fleas, though it is not intended for long-term daily use as a sole flea management strategy. For best results, observe your pet for a few minutes after administration to ensure the tablet has not been spit out or regurgitated. If you are using this as a first-line defense against a heavy infestation, you may notice fleas falling off the pet's coat shortly after the medication enters the bloodstream. Because Capstar works systemically through the blood, it remains highly effective regardless of whether your pet has been bathed or exposed to water, which is a common limitation of certain spot-on treatments.

Precautions

Capstar is intended for use in dogs and cats only. While the medication is generally well-tolerated, some pets may experience transient signs of scratching or restlessness as the fleas react to the medication before dying. Do not administer to animals weighing less than 2 pounds or kittens/puppies younger than 4 weeks of age. If your pet has a history of seizures or other neurological conditions, consult your veterinarian before use to ensure the safety profile aligns with their specific medical history. Always ensure you are using the correct weight-range dosage to avoid under-dosing or over-dosing your animal. In the event of an adverse reaction, such as vomiting, lethargy, or loss of appetite, discontinue use and contact your veterinary professional immediately to evaluate if further medical intervention is required.

Key Benefits

  • Rapid Onset of Action: Begins killing adult fleas within 30 minutes, providing fast relief from painful biting.
  • High Efficacy: Proven to kill 90% or more of existing adult fleas on the pet within 4 hours for dogs and 6 hours for cats.
  • Safe for All Life Stages: Appropriate for puppies, kittens, pregnant, and nursing pets when dosed according to body weight.
  • Versatile Administration: Can be used in conjunction with other flea and tick medications, as it has no contraindications with common preventatives.

Where to Buy

Frequently Asked Questions

This information is educational only. Always consult a licensed veterinarian before using new products on your pet.