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PetArmor CapAction is an over-the-counter oral flea tablet for medium and large dogs weighing 25 to 125 lbs. Each 57 mg tablet contains nitenpyram, the same active ingredient as Capstar, and starts killing adult fleas within about 30 minutes, with over 90% effectiveness within 4 hours. It kills fleas for roughly 24 hours, so it is a fast knockdown rather than a monthly preventive. It suits owners who need quick relief for a flea-infested dog or who want a pill instead of a topical. Compared with Capstar it is the budget alternative with the same ingredient; compared with monthly chewables like NexGard or Bravecto it does not prevent reinfestation.
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Lowest price we've seen: $62.98 on Nov 11 at Walmart. Tracked across 1 store since Nov 11.
Owners use CapAction as a fast rescue pill and generally report fleas dropping off within hours. Many compare it favorably to Capstar on cost. Complaints center on the short duration and occasional vomiting.
PetArmor CapAction is an oral flea treatment for adult dogs weighing 25 to 125 lbs. It comes as tablets and contains nitenpyram, the same active ingredient as CAPSTAR. It is sold over the counter.
It begins working in 30 minutes. Within 4 hours, it is more than 90% effective against adult fleas on dogs. Each tablet is 57 mg.
