Join or Sign In

Sentinel Heartworm Tablets for Large Dogs 51-100 lbs

  • Made in the USA
  • Free Shipping Item!
  • Rx Required

    Prescription Required

    A prescription is required for this product. Once we receive your order, we’ll quickly contact your vet and ship your prescription within one business day of receiving approval.

    * If you have a prescription in hand, select the "mail my prescription" option during checkout.

    * UPS doesn’t ship on Saturday, Sunday, and most holidays. Note: If you are ordering medication, shipping is not available in the following states: LA.

$50.99

Quantity Discounts

Learn More

Save Time and Money With Auto Ship!

Get your pet’s favorite products delivered on the schedule you set.

Product Details

Stop parasite problems in their tracks with Sentinel Heartworm Tablets for Large Dogs. These veterinarian-recommended tablets help keep your large breed dog protected from disease-causing parasites, intestinal worms, plus fleas! Just give your dog the tasty beef-flavored tablets once a month. Your dog won't even notice the powerful protection for Sentinel Heartworm Tablets for Large Dogs, your pet will just think he or she is getting a delicious treat. A prescription only medication, these Sentinel tablets come in a variety of sizes, perfect for your big buddy or small sidekick.

Do I need a prescription to purchase this product? Yes.
What is the main flea killing ingredient (active ingredient)? None.
What are the flea sterilizing or additional ingredients? Lufenuron (flea sterilizer) and Milbemycin (for additional parasites).
Intended Use: Dogs.
What is the youngest age I can use this on my pet? At least 4 weeks.
What is the weight requirements for use? 51-100 lbs.
Can I use on my pregnant or lactating (nursing) pet? No.
Is this Waterproof or Water Resistant?: N/A.
How long until maximum effectiveness is reached? Peak activity at 6 hours.
What other parasites does this kill, control, or repel? Hookworms, Roundworms, Whipworms, and Heartworm.
How often should I apply or administer? Monthly.
How is it administered (Topically, orally, or other)? Oral (tablet, beef-flavored).

Directions for Use:
1. Give Sentinel Flavor Tabs once a month on the same day of each month year-round.
2. Sentinel Flavor Tabs is for use in dogs only. Do not give to cats.
3. Watch your dog closely following dosing to be sure the entire dose has been swallowed. If it is not completely swallowed, give one more full recommended dose as soon as possible.

Additional information on treating heartworms:
  • Talk to your veterinarian about the heartworm testing that is recommended before starting your dog on a heartworm prevention program.
  • Some intestinal parasites, such as hookworms and roundworms can be spread to people.
  • Talk to your veterinarian about other measures you can take to prevent your pet from being infected with intestinal worms, and protecting yourself.
  • Notify your veterinarian of any other medications or supplements your dog is taking, and also if your dog has had any reactions to previous medications.
  • This medication should only be given to the pet for which it was prescribed.

Although there are no known drug or food interactions with this medication, consult with your veterinarian before using Sentinel with any other medications, including vitamins and supplements, since interactions may occur.

Usage Precautions:
  • Do not give to cats
  • Watch your dog closely following dosing to be sure the entire dose has been swallowed. If it is not completely swallowed, give one more full recommended dose as soon as possible
  • Do not remove Sentinel from its wrapper until ready to give to your pet
  • Do not use in puppies less than 4 weeks of age or less than 2 pounds.
SKU: RX201

Ingredients

Active Ingredients: Milbemycin Oxime, Lufenuron.

Reviews

REVIEW SNAPSHOT®

by PowerReviews
Sentinel Heartworm Tablets for Large Dogs
 
4.9

(based on 8 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Effective (6)
  • Easy to use (5)

Cons

    Best Uses

        • Reviewer Profile:
        • Long-time pet owner (8)

      Reviewed by 8 customers

      Sort by

      Displaying reviews 1-5

      Back to top

      Previous | Next »

       
      5.0

      LOVE THIS PRODUCT

      By JDOIMER

      from SAGINAW, MI

      About Me Long-time Pet Owner

      Pros

      • Effective
      • Gentle
      • Good Value
      • Long-Lasting

      Cons

        Best Uses

          Comments about Sentinel Heartworm Tablets for Large Dogs:

          THIS PRODUCT IS GIVEN ONCE A MONTH AND MUST TASTE PRETTY GOOD HE LOVES TO TAKE IT. i HAVENT HAD ANY ISSUES WITH THIS PRODUCT AND I HAVE BEEN GIVING IT TO MY DOG SINCE IT BECAME AVALIABLE. I MISSED IT WHEN THEY TOOK IT OFF THE MARKET. GOOD PRODUCT FOR THE PRICE.

          Comment on this review

           
          5.0

          Recommended by our Vet

          By Lisa61

          from Northwestern Connecticut

          About Me Long-time Pet Owner

          Pros

          • Effective

          Cons

            Best Uses

            • Larger Pets
            • Older Pets

            Comments about Sentinel Heartworm Tablets for Large Dogs:

            We have used Sentinel Heartworm Tablets for Large Dogs for many years. Our black lab has never had fleas or tested positive for heart worms while using this product.

            Comment on this review

            (1 of 1 customers found this review helpful)

             
            5.0

            Sentinel Heartworm Tablets

            By Audrey

            from Ovilla, Texas

            About Me Long-time Pet Owner

            Verified Reviewer

            Pros

              Cons

                Best Uses

                  Comments about Sentinel Heartworm Tablets for Large Dogs:

                  With four large dogs I need a product that I know works! This product has been my choice for many years and I have no plans on going to something different. I never have any fleas and the fact they are house dogs, this is an important point. GREAT monthly heartworm medicine and the bonus is is takes care of fleas without using an additional product. One pill, one time per month does it!

                  Comment on this review

                  (0 of 1 customers found this review helpful)

                   
                  5.0

                  Great price!

                  By Lynn with a "forever" home

                  from Austin TX

                  About Me Long-time Pet Owner

                  Verified Reviewer

                  Pros

                  • Dogs love the taste
                  • Easy To Use
                  • Effective
                  • Long-Lasting
                  • No Side Effects

                  Cons

                    Best Uses

                    • Monthly regimen
                    • Older Pets
                    • Younger Pets

                    Comments about Sentinel Heartworm Tablets for Large Dogs:

                    Love this product and have used it for years. We have never had any fleas indoors OR outdoors since starting it. In the past I had a flea infestation inside the home and had to use the "bomb" pesticides. This product is somewhat expensive but well worth it-and National Pet Pharmacy has a great price. Now I think of all the money I spent at the vets office when I could have been ordering online!

                    Comment on this review

                     
                    5.0

                    Easy shopping

                    By Terry

                    from Lawrenceville, GA

                    About Me Long-time Pet Owner

                    Verified Reviewer

                    Pros

                    • Easy To Use
                    • Effective

                    Cons

                      Best Uses

                        Comments about Sentinel Heartworm Tablets for Large Dogs:

                        The product is routinely administered once per month. [...]

                        Comment on this review

                        Displaying reviews 1-5

                        Back to top

                        Previous | Next »