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Sentinel dogs 26-50 lbs (Yellow)

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3 Chews $46.73
6 Chews $91.55
12 Chews $182.10
Sentinel dogs 26-50 lbs (Yellow) 3 Chews
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  • Pet
  • Treatment For
    Flea and Worm
  • Health Benefits
    Fleas and Heartworms
  • Product Type
    Chewable Tablet
  • Parasites Covered
    Fleas, Heartworm, Roundworm, Hookworm, Whipworm
  • Protects For
    One Month
  • Recommended For
    Dogs and Puppies above 4 weeks and Older
  • Key Ingredients
    Milbemycin Oxime, Lufenuron

Sentinel for Dogs

Sentinel for Dogs is a beef flavored flea and heartworm prevention tablet that is designed especially for dogs to help prevent both heartworm and flea infestation problems in one tasty flavor tablet. This palatable chew needs to be given to dogs and puppies once a month. Sentinel for Dogs control the flea population by preventing the development of flea eggs but do not kill adult fleas. This treatment can be administered in pregnant bitches.

It is safe to be given to dogs and puppies at least 2 lbs in weight and 4 weeks of age

How It Works?

Sentinel for Dogs consists of two active ingredients - Milbemycin Oxime and Lufenuron. Milbemycin oxime interferes with nerve transmission in invertebrates, which helps protect against heartworm, roundworm, hookworm and whipworm.  Lufenuron is an insect growth regulator that interrupts the flea breeding cycle. Adult fleas that feed on an animal treated with Sentinel Spectrum will produce eggs or larvae that do not develop to the adult stage therefore reducing the number of fleas in the environment.

Important Note: Novartis is now acquired by Elanco. So, the manufacturer’s name on product packs may vary according to the available stock.

Ingredients: Milbemycin Oxime, Lufenuron

  • The very first step is to verify your pet with prevailing heartworm infection test
  • If it is negative then commence the treatment
  • There are four different packs available for Sentinel: Brown, Green, Yellow and White
  • Select the right pack according to the weight of the dog
  • You can give the palatable beef flavored treatment orally directly to the dog or mix it with the dog food
  • Break the pieces into small pieces and then mix it with the dog food
  • Ensure that the pet completes the entire meal for the dose to be effective
  • Replicate the process every month if possible on the same date
  • You can administer this oral treatment to breeding dogs and pregnant bitches at the same time of mating prior to whelping and then replicate the process every month
  • For further information on the dosage take the help of your veterinarian

Dosage table:

Dog weight

Dog size

Pack color

2-10 lbs

Very Small


11-25 lbs



26-50 lbs



51-100 lbs



  • Before commencing the treatment verify with your veterinarian whether your pet has an existing heartworm infection. If the results are positive you can commence the treatment but there are chances of a mild, transient reaction in dogs
  • Do not administer this oral treatment in puppies younger than four weeks of age
  • It is safe to administer this oral treatment if the heartworm infection test is negative
  • Sensitive pets may have certain side effects like vomiting, diarrhea, pruritus, lethargy and depression after administration of the treatment
  • A single treatment for protection against wide array of parasites
  • Easy to administer oral treatment for treating fleas and intestinal worms
  • Highly palatable beef flavored tablets which is loved by all breeds of dogs and puppies
  • Protects dogs from parasite borne diseases
  • The active ingredient present in Sentinel for Dogs - Lufenuron has no toxicity to animals hence, it is very safe to use in all breeds of dogs

Sentinel Reviews

Average Rating 4.8 Based on 35 Reviews
80% of Reviewers Recommend This Product All Review
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The best ever Sep 14, 2020
Absolutely the best ever. Effective and efficient.
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Elanco stuffs are good Sep 01, 2020
Elanco products are exceptional. This one is no better.
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Supports my dog Aug 21, 2020
Supportive and very good. Awesome treatment.
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Suitable Jul 30, 2020
Suitable and safe for dogs
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Happy to use Jul 13, 2020
Very happy customer:)
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well-tolerated Jun 25, 2020
Well-tolerated and no side effects to the dogs. Hopefully the problem is resolved
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Recommended Jun 14, 2020
I highly recommend this wormer.
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Vet recommended May 24, 2020
Vet recommended. I have used it for years.
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Effective May 18, 2020
A fairly effective treatment for dogs
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Alright May 11, 2020
Worked just alright.
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Sentinel for Dogs
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