Sentinel Spectrum Chew for Dogs, 2-8 lbs, (Orange Box)

By Sentinel Spectrum
Rated 4.3056 out of 5 stars
Prescription Item

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$51.99Chewy Price

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Usually arrives in 3-5 days
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About This Item


Your furry friend must have a current heartworm test result on file with your veterinarian in order to be prescribed heartworm medication. Please visit your veterinarian to have this test performed annually to protect your four-legged friend. Sentinel Spectrum is a monthly oral preventive prescription that protects your pet against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. Best of all, this medication may also help protect your pal against heartworm disease and intestinal worms, all in a tasty, flavored chewable tablet.

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.

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Learn More About Sentinel Spectrum From Our Team of Experts

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ReviewsWrite a Review

Rated 4.3056 out of 5 stars
36 Ratings
Would recommend to a friend

35 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By Stephanie787 on Aug 25, 2023

Heart worm/flea Protection

I used Sentinel for many years on my other dog who was MDR1 positive as many Aussies are. My new puppy is a toy Aussie. He is a little over 4 pounds now so I was happy to see that Sentinel comes in a dosage for small dogs. I urge all Aussie owners and Collie owners to have their pets checked for MDR1 and in my opinion to discontinue use of medications designed for multiple uses. To read the ingredients carefully. There have been several deaths which are not made public because of lack of information on the MDR1 Gene.

Rated 5 out of 5 stars
By Kobysmom on Jul 1, 2023
Top 100 Contributor

Good for heartworm prevention

People who are complaining that this doesn’t work on fleas it says so right in the product description. It only works on killing flea eggs, not on adult fleas, you will need something else for that (my vet gave me Vectra for that). The main thing I’m using it for is for heartworm prevention, but it also kills some worms and flea eggs. My dog ate it right down when I fed her her kibble. I cut it into quarters because her kibble is small and I didn’t want her not to eat the sentinel. The first piece she was a little leery of but after a little hesitation she ate it. She had no reaction to it at all which I’m very thankful for.

Rated 5 out of 5 stars
By Carol on Apr 13, 2023

Excellent service

What more can I say excellent service and everyone was so kind and helpfull thanks again for your kindness.

Rated 3 out of 5 stars
By Joni on Jun 13, 2022

Want fleas gone!

I ordered this one be star my puppy is only 3 pounds and it is safe for small as 2.8. Unfortunately, I still see fleas crawling on her. I read in the questions and answers that you may need to get a flea medicine for adults which is ridiculous because if they have fleas they will have adults fleas as well. I called to see what could I use. And the pharmacist tech, talk to the pharmacist and says this is not a great pill. But it advertised as it is one.

Rated 1 out of 5 stars
By Christine on Oct 28, 2022

not as advertised

my dog got fleas just a couple weeks after taking this product.

Rated 5 out of 5 stars
By MJ42 on Aug 26, 2022

Good start

It’s what the vet told me to give him and he took it with no fuss

Rated 5 out of 5 stars
By GLORIA on Jun 17, 2022

This stuff is fantastic

Very good for a small one and I give it to my Princess with her food.

Rated 5 out of 5 stars
By BlkGaL on Oct 16, 2021

Very Pleased

Our Fur Son ITTY-BITTY only 6 lb (A MORKIE) we started him on Sentinel at his second vet appointment he's been on it ever since and he will be 1 on the 27th of this month I think Sentinel is awesome it works extremely well although he doesn't go outside at all unless he's unless it's appointments and when he does he's constantly his stroller therefore he doesn't be around dogs so I don't have to worry about the flea part but this does work apparently well against fleas as well he does not like it by itself so we literally always have to crush it up in little pieces to camouflage it with his wet food what they said I definitely recommend this product this will be my second 6 month supply

Rated 5 out of 5 stars
By Nayster on Jul 14, 2021

So easy to use!

This product is so easy to use and works very well. Much better than the topical flea medicine. My 3lb. Yorkie gobbles them up each month without having to "hid" it in cheese!

Rated 5 out of 5 stars
By Biewers on Jun 30, 2021

One of the better ones

Great for small dogs that mostly stay at home. A bit hard for them to chew. Not a great flavor!!