SENTINEL Tablet for Dogs, 11-25 lbs, (Green Box), 6 Tablets (6-mos. supply) -

Sentinel Tablet for Dogs, 11-25 lbs, (Green Box)

By Sentinel
Rated 4.3936 out of 5 stars
Prescription Item
Pet Weight
Pet Weight

$50.99Chewy Price
This item requires prescription approval.

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Medications ship separately. Delivery times may vary.

In Stock
FREE 1-3 day shipping
We'll collect your pet's prescription information at Checkout.

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 is a monthly oral preventive prescription that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. It protects your dog against heartworm disease and intestinal worms, all in a palatable, flavored tablet.

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

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Play Video: Learn More About Sentinel From Our Team of Experts
Learn More About Sentinel From Our Team of Experts

ReviewsWrite a Review

Rated 4.3936 out of 5 stars
188 Reviews
Would recommend to a friend

188 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 Sarge on Mar 8, 2023

Great service

Sentinel was ordered by my Veterinarian and sent to my house by chewy. It was so easy. Love it.

Rated 5 out of 5 stars
By Donna on Feb 3, 2023

Della - heartworm meds

Sentinel is easy to give my pets; no chewing involved which helps to administer.

Rated 2 out of 5 stars
By Nikki on Nov 29, 2022

Wish I could have liked it.

Well this medicine gave my dog diarrhea. I ordered a 6 pack but refuse to give him anymore.

Rated 5 out of 5 stars
By Mary on Nov 20, 2022

flea/worm medicine

Glad that I finally got a flea/worm medicine that my boy can take. So happy he is protected.

Rated 5 out of 5 stars
By Lesley on Dec 1, 2022

Good Product

I have been using for years and am very happy with the health benefits provided.

Rated 5 out of 5 stars
By Bigdog on Nov 26, 2022

Works for me

Good value, convenience, good shipping time..............whats not to like!

Rated 5 out of 5 stars
By Suri on Sep 24, 2022

Great Product

We have been using this for many years per our veterinarian's suggestion. We have never had any problems with our dog taking it.

Rated 5 out of 5 stars
By Chewy on Nov 5, 2022

Sentinel tabs

I've been giving my two dogs these tabs for years and they are very effective.

Rated 4 out of 5 stars
By DeeM on May 26, 2022

Great product

We have used this product for years. We are now using Sentinel Spectrum. I am glad because Chewy would cover the monthly reminder that one uses to mark off that you gave the dog its pill. It is on the front of the box at the left bottom. It was so convenient to use. You can put the day 's number over the month. But of course, Chewy just had to put the prescription over it. That was so annoying. That is why I gave one less star. On the newer product, Sentinel Spectrum, they have a line of 12 months on the side of the box to check off. So nice that Chewy cannot cover it up.

Rated 5 out of 5 stars
By Carcar on Oct 25, 2022

Sentinel tablets

Fast and easy process love chewy! They call the vet for you!