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4.4 from 22,392 reviews
248K+ sold
PetArmor CAPACTION (Nitenpyram) Oral Flea Treatment for Cats, 2-25 lbs — 6 Doses
Compare on what matters: PetArmor CAPACTION (nitenpyram) is a non-prescription oral treatment that starts killing adult fleas within 30 minutes. Its oral format keeps treatment off your cat's coat, with no veterinarian prescription needed.
$27.98
Key Features
•
One oral pill starts killing adult fleas within 30 minutes
•
No topical mess, no rubbing off, and no prescription needed
•
Redose as often as once a day for flea re-infestations
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For eligible kittens and cats 2 to 25 lbs, 4 weeks and older
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Even safe for pregnant or breeding cats when used as directed
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Includes 6 doses to kill adult fleas that may trigger allergy dermatitis
Count
6
12
Weight
2-25lbs
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Customer confidence
248K+ recently bought this product
Top seller
99.1% of customers keep this item
Low return rate
Over 248K+ happy customers
Compare active ingredients
The same active ingredient as CAPSTAR
CAPACTION contains nitenpyram, the same active ingredient as CAPSTAR, in a non-prescription oral treatment. It starts killing adult fleas within 30 minutes, giving comparison shoppers a clear benchmark for speed and convenience.
A coat-friendly format
Especially simple for long-haired cats
An oral pill means there is no topical product to part through fur, apply to skin, or wait to dry. It also avoids the mess and rubbing off associated with topical treatments, helping keep your cat's coat untouched.
Flexible pack options
Keep the dose count that fits your routine
Choose a 6-dose or 12-dose pack based on how many doses you want available. If adult fleas return, CAPACTION can be given again as often as once daily, when used as directed.
Expert tested. Built for outdoorsy dogs.
Adult flea treatment, simplified for side-by-side comparison
Advocacy
84%
Of customers have recommended us to a friend or family member.
Satisfaction
75%
Of customers gave us positive customer satisfaction scores.
A 30-Minute Start to Adult Flea Kill
For shoppers comparing start times, one oral pill starts killing adult fleas within 30 minutes. It is a direct option when speed of action is a priority.
Non-Prescription Nitenpyram
CAPACTION contains the same active ingredient as CAPSTAR and requires no veterinarian prescription, offering a convenient oral option for side-by-side brand comparisons.
Clear Eligibility and Repeat Dosing
For cats and kittens 2 to 25 lbs and 4 weeks or older. If fleas return, it can be given as often as once daily, including to pregnant or breeding cats, when used as directed.
Frequently Asked Questions
CAPACTION starts killing adult fleas within 30 minutes of administration. For shoppers comparing quick-action oral, topical, and prescription options, that stated start time provides a clear point of comparison.
Average 4.4 Star Rating
Over 19,000+ Positive Reviews
We've collected over 22,392 reviews from shoppers on our website and major retailers.
Lyubov
Oct 26, 2025
Amazing Product – It Really Works!
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July Berry
Aug 26, 2023
5.0 out of 5 stars Easy, works great!
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Tabatha Perez
Apr 25, 2026
Work's!
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Kitty Royse City
Mar 28, 2026
These work for scratching without the mess.
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Sarah Dunham
Oct 2, 2025
Gets rid of the fleas fast!
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Lindsay Gonzales
Sep 13, 2025
BEST FLEA Med for Big Fluffy Cats
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Tabitha
Jun 23, 2025
This stuff works!!
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khalil al-stouhi
May 16, 2025
Make sure to always keep this on hand
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Lindsey
Dec 13, 2024
Works well to get rid of adult flees
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peteygrizz
Nov 9, 2024
Fast and effective
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