Sentinel Tablet for Dogs, 51-100 lbs, (White Box), 6 Tablets (6-mos. supply)

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$72.99 Autoship Price
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$72.99 Chewy Price
($12.17 /ea)

In Stock
FREE delivery
Usually arrives in 3-5 days
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We’ll reach out to your vet clinic.
Medications ship separately. Delivery times may vary.

About This Item

Details

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 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 tablet.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.

Ingredients

Instructions

FAQ

Learn More About Sentinel From Our Team of Experts
4.8
Rated 4.8 out of 5 stars
1795 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

92% Positive

Effectiveness

89% Positive

Ingredients

90% Positive

Long-Term Benefits

91% Positive

582 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 Leonard on Sep 22, 2025

Replacement

I ordered 2 boxes of these and they were to be delivered the day before I left for the weekend. I should have know there would be problems when the shipper was On-Trac

I ordered 2 boxes of these and they were to be delivered the day before I left for the weekend. I should have know there would be problems when the shipper was On-Trac. They missed the delivery day, then missed an opening the flowing day by noon. The medication spent the weekend sitting out in 100 plus degree temperatures. The person I spoke to sent me a replacement. Great Customer Service!


Rated 5 out of 5 stars
By Danette on Aug 28, 2025

Right Product with speedy delivery

Thank you Chewy! I had to change vets to get you back, last rx I had to get thru vet rx service, delivered WRONG med told NO refund or returns. I searched until

Thank you Chewy! I had to change vets to get you back, last rx I had to get thru vet rx service, delivered WRONG med told NO refund or returns. I searched until I found a vet that would work with Chewy to get the right meds. Thank you!!!!


Rated 3 out of 5 stars
By Connie on Sep 10, 2025

My mistake.

I meant to order the blue box chews, not the white box tablets. I’m just hoping they are basically the same thing, and Luna won’t have any problems.

I meant to order the blue box chews, not the white box tablets. I’m just hoping they are basically the same thing, and Luna won’t have any problems.


Rated 5 out of 5 stars
By Jo on Aug 9, 2025

Chewy is dependable

We received a $20.00 off coupon and we like saving money. We have ordered many times for all of our dogs, but this was our first order for Dudley and it was delivered

We received a $20.00 off coupon and we like saving money. We have ordered many times for all of our dogs, but this was our first order for Dudley and it was delivered promptly and carefully.


Rated 5 out of 5 stars
By Maggie on Aug 11, 2025

We love buying from chewy

We love buying from chewy. Shipping is fast and I love how they take care of vets approval real quick for you so you don’t have to do it yourself

We love buying from chewy. Shipping is fast and I love how they take care of vets approval real quick for you so you don’t have to do it yourself


Rated 5 out of 5 stars
By Linda on Aug 28, 2025

Love Chewy

My dogs have always been on Sentinel, no issues ever. Works great and delivery was super fast. Just love you guys.

My dogs have always been on Sentinel, no issues ever. Works great and delivery was super fast. Just love you guys.


Rated 5 out of 5 stars
By Barbara on Aug 4, 2025

Price

Much cheaper than the other brand. I checked with my vet and got the ok, Molly thinks she is getting a treat. Makes me happy to have a choice.

Much cheaper than the other brand. I checked with my vet and got the ok, Molly thinks she is getting a treat. Makes me happy to have a choice.


Rated 3 out of 5 stars
By April on Sep 9, 2025

1 issue

This pill is fine if your dog will eat it. Mine don't like it so the chews are much better for me.

This pill is fine if your dog will eat it. Mine don't like it so the chews are much better for me.


Rated 5 out of 5 stars
By Chris on Sep 27, 2025

Good product

Works well for fleas and all the worms. Dogs are always negative on lab value.

Works well for fleas and all the worms. Dogs are always negative on lab value.


Rated 5 out of 5 stars
By Frank on Jun 8, 2025

Ease of giving monthly dose

This product was a great recommendation from one of your reps. Sentinel is a reputable brand that's well known and been around a long time, it was also a very reasonable

This product was a great recommendation from one of your reps. Sentinel is a reputable brand that's well known and been around a long time, it was also a very reasonable price for an ALL in One tablet to protect against fleas, ticks plus heartworms.