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Capstar Large Dog 57 mg 25.1-125 lbs Green
4.7/5
(84)
Capstar

Capstar Large Dog 57 mg 25.1-125 lbs Green

4.7/5
(84)
$25.26
$31.57
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Select Size
  • 2 to 25lbs
  • 25 to 125lbs
Select Pack
  • 6 Tablets
  • 12 Tablets
$31.57 $25.26
$23.99

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  • Information
  • Key Benefits
  • Directions for Use
  • Safety
Information

Capstar Green for Large Dogs: Fast-acting Oral Flea Treatment

Capstar Green is an oral flea treatment for large dogs that generally resist messy topical treatments requiring application and rubbing. This vet-recommended tablet starts working fast and provides quick relief to your dog from the irritation of flea infestations. You may see the dead fleas falling off your dog after a single dose. Capstar is suitable for dogs and puppies aged 4 weeks and above, and weighing between 25.1 & 125 lbs.

Capstar Green for Large Dogs coverage

Capstar oral flea treatment kills adult fleas, including fleas that cause flea allergy dermatitis (FAD), and treats flea infestations in dogs. The single treatment lasts for 24-48 hours and helps treat flea outbreaks.

How do Capstar Green flea tablets work?

Capstar Green for Large Dogs contains 57 mg nitenpyram, a powerful ingredient that helps say goodbye to fleas fast. It targets the nervous system of parasites, and starts killing fleas within 30 minutes and provides quick relief to your dog from infestations. In studies conducted by the manufacturer, Capstar showed over 90% effectiveness against adult fleas within 4 hours of administration. Additionally, you may give another dose of Capstar to your dog as often as once per day in case of flea re-infestations.

Ingredients

Nitenpyram

Key Benefits
Advantages Of Capstar
  • Fast-acting oral flea treatment
  • Easy-to-administer tablet form
  • Ideal for dogs that resist topical treatments
  • Begins killing fleas in 30 minutes
  • Suitable for dogs and puppies from 4 weeks of age (2 lbs. minimum weight)
Directions for Use

Instructions To Use Capstar

  • Weigh your dog prior to administration. Do not administer Capstar to dogs weighing less than 2 lbs.
  • Capstar for Dogs is available in different sizes for weight-appropriate dosage. Select the pack that corresponds to your dog’s body weight.
  • Remove the Capstar tablet from the package.
  • Place the tablet directly into your dog’s mouth or hide it in food.
  • If you hide it in food, observe your dog closely to ensure that the entire dose is consumed.
  • If you are unsure that your dog has swallowed the entire tablet, it is safe to administer another full dose.
  • It is recommended to treat all pets in the household, as fleas can reproduce on untreated pets and allow infestations to persist.

Dosing:

Dog weight (lbs.) Nitenpyram per tablet Dose
2 – 25 11.4 mg One tablet
25.1 – 125 57.0 mg One tablet
Safety
Capstar Safety Measures
  • This tablet is for animal treatment only.
  • It is not for human use. Keep out of reach of children.
  • Read the label completely and follow the directions for use.

Storage

  • Store in a controlled room temperature between 59° and 77°F (15°-25°C).
Customer Review
Overall Rating

Star4.7/5

84 reviews
84 reviews
Sort By:
Cameron
Instant Relief

When we saw one flea, this cleared everything up in minutes.

May 17, 2026
Enid
Instant Flea Knockout

When I saw fleas, this cleared them up in less than an hour!

May 10, 2026
Eva
Instant Kill

Kills fleas in under an hour. Great for emergencies.

May 03, 2026
Nancy
Instant Flea Kill

Kills fleas in 30 minutes. Perfect for immediate emergencies.

May 03, 2026
Nancy
Instant Help

This is perfect for a flea emergency. It kills them within 30 minutes.

Apr 26, 2026
Have A Question?
Question:
Q:

Is this the same product other companies sell at a higher cost?

Answer:
A:

Capstar for dogs is a flea treatment that provides quick relief from flea infestations.

Mar 03, 2025
Capstar Large Dog 57 mg 25.1-125 lbs Green 6 Tablets
$31.57 $25.26

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