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What is Sentinel Spectrum for dogs?

Sentinel Spectrum is a broad-spectrum canine treatment for fleas, heartworms and intestinal parasites.

When administered on a monthly basis, Sentinel Spectrum prevents the development of heartworm, and protects against roundworms, hookworms and ringworms. Sentinel Spectrum varies from the original Sentinel Flavor Tabs by also protecting your dog against tapeworms.

Sentinel Spectrum controls flea infestations by eliminating adult fleas for a full month, killing them before they can lay eggs and thus breaking the breeding cycle.


  • Broad spectrum formula protects from multiple parasites
  • Fast acting – begins working immediately
  • No mess oral treatment
  • Palatable beef and bacon flavored chew

Is Sentinel Spectrum suitable for my dog?

Sentinel Spectrum is suitable for dogs and puppies at least 6 weeks of age, with a minimum weight of 2 pounds (0.9 kg).The safe use of Sentinel Spectrum with breeding, pregnant or lactating dogs has not been evaluated.

Dosage Schedule

Sentinel Spectrum for dogs is administered once a month, with the exact dosage determined by your dog’s body weight. Ensure you weigh your dog before giving any medication.

Body weight Milbemycin Oxime per Chewable (mg) Lufenuron per chewable (mg) Praziquantel per chewable (mg) Chewables administered
2-8 lbs (0.9-3.5 kg) 2.3 46 22.8 One
8.1-25 lbs (3.5-11 kg) 5.75 115 57 One
25.1-50 lbs (11-22 kg) 11.5 230 114 One
50.1-100 lbs (22-45 kg) 23.0 460 228 One
Over 100 lbs (45kg)       Administer the appropriate combination of chewables

Sentinel Spectrum may be offered by hand or broken up and added to food. If given by hand, the dog should chew the treatment rather than swallow it whole. If you dog is likely to swallow without chewing, it is better to break up the chewable before offering.

To ensure the most efficient absorption, Sentinel Spectrum should be given at the same time or immediately after a meal.

What are the side effects of Sentinel Spectrum?

Side effects reported after the use of the contained active ingredients include: vomiting, lethargy, pruritus, urticaria, diarrhea, anorexia, skin congestion, ataxia, convulsions,salivation, and weakness.

What precautions must be taken?

  • Keep out of reach of children and pets.
  • Not for human use.
  • For canine use only – do not give to cats.
  • Do not use on dogs under 6 weeks of age.
  • Do not give to dogs weighing less than 2 lbs (0.9 kg).
  • The safe use of Sentinel Spectrum with breeding, pregnant or lactating dogs has not been evaluated.

How effective is Sentinel Spectrum (Milbemycin Oxime, Lufenuron, and Praziquantel)?

In a well-controlled laboratory study, Sentinel Spectrum was 100% effective against induced heartworm infectionswhen administered once monthly for 6 consecutive months.

Elimination of the adult stage of hookworm (Ancylostoma caninum), roundworm (Toxocaracanis, Toxascarisleonina),whipworm (Trichuris vulpis) and tapeworm (Echinococcus multilocularis, Echinococcus granulosus, Taenia pisiformis)infections in dogs was demonstrated in well-controlled laboratory studies.

In well-controlled studies, Sentinel Spectrum was effective in preventing flea eggs from hatching, thus providing controlof the development of flea populations (Ctenocephalides felis).

Brand Comparison

Sentinel Spectrum Chewables

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    H. Kim
    My dog always take this
    Sentinel spectrum covers free amd heartworm both. And my dog is kingchars spaniel. And her breed has weak heart. So this item is essential for her.
    Martin Ashe
    Pet Bucket
    I love petbucket because I do not need a perscription from a vet for my dog.
    Serhiy Yavtushenko
    Great customer service. Quality products. THX
    Serhiy Yavtushenko
    Great customer service. Quality products. THX