PetArmor CAPACTION (nitenpyram) Oral Flea Treatment for Dogs, Fast Acting Tablets Start Killing Fleas in 30 Minutes, Dogs Over 25 lbs, 6 Doses (Pack of 1) (Packaging May Vary)
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Availability:
In Stock.
Arrives
Sunday, Oct 25
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Size: 25+ lbs
Features
- Fast-Acting Flea Pills for Dogs: One oral flea tablet starts killing fleas within 30 minutes of administration
- Safe to Use: This oral dog flea medicine is safe for puppies, dogs, cats, and kittens from 25 lbs and over, four weeks and older, when used as directed
- Treat Re-Infestations Fast: If your pet gets re-invested with fleas, simply apply another dose as often as once a day; CapAction flea medicine for dogs is even safe for use on pregnant or breeding dogs
- Easy to Use: Without the mess and rubbing off of a flea and tick topical treatment and without the need of a veterinarian prescription, these flea tablets for dogs are administered orally to kill adult fleas fast
- Help Pet Owners Kill Fleas Efficiently: CapAction dog flea medication has 6 doses and kills adult fleas that may cause allergy dermatitis
Description
CAPACTION flea and tick tablets begin killing adult fleas on pets within 30 minutes and is 90% effective against adult fleas within four hours for dogs.
Brand: PetArmor
Item Form: Tablets
Scent: No Scent
Item Weight: 8.53 g
Active Ingredients: Nitenpyram
Allergen Information: Yam Free
Dog Breed Size: Large
Unit Count: 6 Count
Color: White
Age Range (Description): Adult
Product Dimensions : 0.63 x 5.5 x 6 inches; 0.3 ounces
Item model number : 3105
Date First Available : August 19, 2018
Manufacturer : Vetio
Best Sellers Rank: #317 in Pet Supplies (See Top 100 in Pet Supplies) #2 in Dog Flea Pills
#2 in Dog Flea Pills:
Customer Reviews: 4.2 4.2 out of 5 stars (25,622)
Brand Name: PetArmor
Unit Count: 6 Count
Age Range Description: Adult
UPC: 073091033110
Included Components: Oral Doses
Item Type Name: Flea Treatment
Manufacturer: Vetio
Model Number: 3105
Manufacturer Part Number:
Item Form: Tablets
Scent Name: No Scent
Dog Breed Size: Large
Target Species: Dog
Item Weight: 8.53 g
Allergen Information: Yam Free
Active Ingredients: Nitenpyram
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Oct 25
This item is non-returnable:
Non-returnable due to Food safety reasons
View our full returns policy here.
Non-returnable due to Food safety reasons
View our full returns policy here.
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Top Amazon Reviews
Size: 25+ lbs
These do the trick, and I prefer a short-duration med to the 1, 3, or 12 month products. That way, if there is a contraindication, it is out of their system within a few days. Note, the fleas clearly don't like these. I've noticed that as they are dying (or jumping overboard?) in the first couple of hours, they increase activity and may make the dog tickle MORE, and become a bit restless. This is a predictable response in our house and has not has any long-term issues. Good idea to lainder dog bedding while the pills attack.
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Reviewed in the United States on September 28, 2026 by Amazonia
Size: 25+ lbs
A Fast-Acting Lifesaver for Immediate Flea Relief! I highly recommend PetArmor CAPACTION (nitenpyram) Oral Flea Treatment for Dogs, Dogs Over 25 lbs (6 Doses). This product is a fantastic solution for dealing with sudden, heavy flea infestations. Speed and Effectiveness (5/5 Stars) The "Fast-Acting" claim is absolutely true. Within 30 to 45 minutes of giving my dog the tablet, the fleas started dropping off him like rain. It’s quite satisfying to see them die that quickly! The immediate relief this product provides is unmatched. It effectively kills the adult fleas currently on your dog, offering instant comfort. Ease of Use (5/5 Stars) The tablets are small and easy to administer. My dog, who is usually picky, took the pill wrapped in a piece of cheese without any issue. Having six doses is very convenient, as it allows you to treat subsequent flare-ups or use it for multiple pets (if they meet the weight requirement). Important Note (What it does NOT do) It is crucial to understand that CAPACTION is an "instant kill" product. It only kills the adult fleas that are on your dog at the time of treatment. It does not have any residual effect. This means it won't prevent new fleas from jumping onto your dog from the environment (carpet, bedding, yard). For long-term protection, you must pair this with a monthly preventative treatment (like a collar, topical spot-on, or another oral medication). Final Verdict This is a must-have for any dog owner who needs quick, immediate relief from a flea emergency. It's a powerful tool to break the life cycle of fleas fast. Just remember to follow up with a long-term preventative. Overall Rating: 5 out of 5 stars for its purpose (immediate knockdown).
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Reviewed in the United States on October 7, 2025 by Amazon Customer
Size: 2-25 lbs
Great to kill adults fleas and thick. But you need to find one medicine to prevent for them to keep coming. This is not gonna get rid og the problem
Reviewed in the United States on September 7, 2026 by Just the Tip
Size: 25+ lbs
We have two stray dogs on our farm that I feed and love. They started having fleas and I bought the liquid you put on their backs monthly and my husband bought Bug Be Gone granules and treated the yard. That helped some but they roam at night and come back worn out and with fleas. I bought this and each get a pill every third day. I wash their outside bedding almost daily and keep them in the house during the day. Their fleas are basically gone after using as long as you treat the yard and wash bedding and use this several times a week. It’s costly though. I went to Sam’s and bought a twin pack and it was about the same price as a one pack on here. You just have to keep at it. If you think giving one pill and fleas disappear you’ll be disappointed.
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Reviewed in the United States on September 19, 2026 by S. Barrett
Size: 2-25 lbs
Worked much better than I expected! Very happy with this product! Gave my dog overall relief from fleas in about an hour! Started working in about 30 minutes. Bought same meds for my cat and they did great also. Will buy more in the future. If your dog is suffering you need to try this. It works!
Reviewed in the United States on October 7, 2026 by K. Shaner
Size: 25+ lbs
Our dog is about 80lbs and one dose only slowed the fleas down, but didn’t seem to kill them. Dosed him first and then bathed him in dawn dish soap and that helped.
Reviewed in the United States on July 7, 2026 by Chris Kentrup
Size: 25+ lbs
It did what it said it would. Seemed to get rid of the older fleas. It also did as some have mentioned make my pups scratch like crazy. Not sure I’d buy it again. May as well make a trip to the vet to buy the expensive pills. Having said all this, the fleas here in the south are the worst I’ve ever seen. Even with yard granules, bombs in the house and deep cleanings the fleas are still winning this year.
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Reviewed in the United States on July 12, 2026 by SusieQ
Size: 2-25 lbs
For reference, I have a 4lb yorkie and 8kb silky. It’s now mid January and we’ve been battling fleas since the fall. Every time we visit our family at the lake (in a heavily wooded area) they seem to get them again. Its been such a struggle! Topicals just aren’t working anymore. I’ve tried them all, combing with a lice comb several times a day, and baths twice a week, laundry yah-di-yah… ya’ll know the struggle. Im always so afraid to try any flea treatments because there are always reviews of pets having negative reactions. I would be so heartbroken if I was the cause of anything bad happening to my babies. So with this, I skimmed the reviews and had to take a leap of faith. I paid the extra 2.99 to have it delivered same day, that’s how over the fleas I am. I received the package yesterday afternoon, crushed the pills into pieces of leftover shaved steak, folded over. Of course they got plain bites before and after, because, of course ;) around evening I started the combing routine, again, expecting to find the usual couple I do after topical treatment but the only flea I found was dead! This is only maybe an hour or two after feeding them the medicine. I did not expect this to work! They haven’t scratched at all since and the pups are perfectly fine. I was so worried they would get sick or have a reaction, especially being so small. I have to be super careful. I’m grateful for this product and I know my pups are even if they can’t verbalize, they show through their actions and their ability to finally get restful sleep. Idk if they will get immune to this as it seems has happened with all other brand that worked in the past. But for now, I appreciate that they get this relief. The following evening I noticed them scratching again and did another combing. Found more fleas, not a lot and these were smaller so I’m pretty sure some eggs hatched or something, new batch but the medicine didn’t prevent them. I gave a 2nd dose and was doing well. Decided to save the 3rd and final dose of the pack (between two dogs) until 2days away, the weekend where we would be headed back to my moms. I gave them the final dose before leaving my house, as a hopeful preventative and in case any were on them I wouldn’t take fleas to her. They were at her house for the weekend while we went around visiting other family members. When I went to pick them back up Sunday, they needed a flea bath as soon as we got back home. Still not a lot of fleas but definitely didn’t prevent them from picking up more in her yard. Overall, I think these are probably great to be given as soon as soon as fleas are first noticed to possibly stop an infestation or perhaps after a weekly bath to break the flea cycle. They do phage their place and I’ll keep some handy in my flea killing arsenal. But solo I don’t think these are enough on their own. Hope this review helps others decide what’s right for them. The flea battle continues…
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Reviewed in the United States on January 19, 2023 by Melissa Davis