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PetArmor CapAction is an over-the-counter oral flea tablet for dogs, built on nitenpyram, the same active ingredient as Capstar. It starts killing adult fleas within about 30 minutes and reaches over 90% kill within four hours, with no topical application or prescription. It is a short-acting knockdown product, not a monthly preventive, so it suits dogs that need fast relief now, often alongside a longer-lasting flea control. Reviewers like the speed and the low cost compared with vet-channel options, but many note the effect fades within a day and that it does nothing for ticks or eggs.
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Lowest price we've seen: $31.42 on Nov 11 at Chewy. Tracked across 6 stores since Nov 11.
Owners mostly praise how quickly the tablets work and how easy they are to give, and many compare them favorably to pricier vet products. Complaints center on the short duration, vomiting in some dogs, and the need to combine it with another product for lasting control.
PETARMOR CAPACTION is an oral flea treatment for medium and large dogs. Each tablet contains nitenpyram, the same active ingredient as CAPSTAR. It is sold over the counter, so no prescription is needed.
The tablet starts killing adult fleas on the dog within 30 minutes. It reaches greater than 90% effectiveness against adult fleas within four hours. Because it is given by mouth, there is no messy topical application.
It is intended for dogs 4 weeks of age and older that weigh over 25 pounds. It is safe for pregnant or breeding dogs.
