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Sentinel Spectrum (Rx)

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Product Description

Sentinel Spectrum for Dogs 2-8 lbs, 6 Month (Orange) is a monthly chew for dogs to provide protection from flea infestation in dogs and heartworm disease in dogs, and common intestinal worms in dogs.

With just one medication, you can protect your pet from 6 different intestinal parasites. It comes in a beef flavored chew that dogs love to eat.

When given on monthly basis, Sentinel Spectrum Orange by Novartis Animal Health prevents heartworm disease in dogs as well as prevents and controls flea infestation in dogs. Each chew for dogs also treats and controls whipworms, hookworms, roundworms and tapeworms.

Sentinel Spectrum requires a prescription from your veterinarian.

You can order the best quality pet prescription medication online at our online pet pharmacy. You can order pet meds online at our Texas based pharmacy online.  We care for your pets!


Dogs (over two pounds and six weeks of age and older)


  • Available in delicious beef flavored chew for dogs
  • Prevent heartworms and control flea infestation in dogs
  • Treats and controls common intestinal parasites in dogs.
  • Simple once-a-month administration


Sentinel Spectrum for Dog requires a prescription from your veterinarian.

How it Works:

Sentinel Spectrum for dog has the active ingredients milbemycin oxime, lufenuron, and praziquantel. All these ingredients work together for dog flea control, major intestinal worms, and heartworm disease in dogs.

Plus, it has an insect growth regulator (IGR) which kills flea eggs preventing them from hatching into adult fleas.

Ingredients used in this pet prescription medication

Sentinel Spectrum Orange for Dogs 2-8 lbs:

Active Ingredient (per chewable tablet)Amount
Active Ingredient (per chewable tablet)2.3 mg
Lufenuron46 mg
Praziquantel22.8 mg

Sentinel Spectrum Green for Dogs 8.1-25 lbs:

Active Ingredient (per chewable tablet)Amount
Milbemycin Oxime5.75 mg
Lufenuron115 mg
Praziquantel57 mg

Sentinel Spectrum Yellow for Dogs 25.1-50 lbs:

Active Ingredient (per chewable tablet)Amount
Milbemycin Oxime11.5 mg
Lufenuron230 mg
Praziquantel114 mg

Sentinel Spectrum Blue for Dogs 50.1-100 lbs:

Active Ingredient (per chewable tablet)Amount
Milbemycin Oxime23 mg
Lufenuron460 mg
Praziquantel228 mg


Sentinel Spectrum for dog pet medicine should be given once a month, every month of the year. Preferably, this medicine for dogs should be given on the same date each month.

To ensure complete absorption, always give Sentinel Spectrum Orange to dogs either with or immediately after a normal meal. Food is essential for proper absorption of the product into the bloodstream.

Most dogs like the taste of the Sentinel Spectrum Orange chewable tablets for dogs and will accept the chewable readily as a treat. The chewable tablets for dogs should be administered in a manner that encourages the dog to chew, rather than to swallow the medication without chewing. The chewable may be broken into pieces and fed to dogs that normally swallow treats whole.

Directions for Usage

Sentinel Spectrum should be administered orally, once every month with dosing based on your dog’s weight. For prevention of heartworm disease in dogs give this pet med once monthly for at least 6 months after exposure to mosquitoes.

  • Give Sentinel Spectrum Orange chews for dogs to your pet once a month on the same day of each month year-round.
  • For proper digestion, administer this dog flea medicine to your pet immediately after or with a normal meal.
  • Sentinel Spectrum Orange is for use in dogs only. Do not give to cats.
  • Watch your dog closely following dosing to be sure the entire dose of this pet med has been swallowed.
  • Do not remove Sentinel Spectrum for Dogs from the wrapper until ready for administration.


For dogs/puppies: (6 weeks of age or older)

2-8 lbsGive 1 chewable every month(Orange Box)
8.1-25 lbsGive 1 chewable every month (Green Box)
25.1-50 lbsGive 1 chewable every month (Yellow Box)
50.1-100 lbsGive 1 chewable every month(Blue Box)
Dogs over 100 lbsGive the appropriate combination of chewables


This dog flea medicine is not for use in humans. Keep this and all drugs out of the reach of children.

Treating your pet with this pet prescription medicine for fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention.

Prior to administration of this dog flea medicine, dogs should be tested for existing heartworm infections.

Upon the advice of a veterinarian, infected dogs should be treated to remove adult heartworms. Sentinel Spectrum for dog is not effective against adult D. immitis.

Do not use this dog flea medicine and heartworm medication in puppies less than six weeks of age. Do not use in dogs or puppies less than two pounds of body weight.

The safety of Sentinel Spectrum orange, chewable tablets for dogs has not been evaluated in dogs used for breeding or in lactating females.

In dogs at risk for MDRI-allele mutation, caution is advised if the pet is being given other pet medications.

Do not give this dog flea medicine to your pet if already giving an alternate heartworm medicine.


Store the Sentinel Spectrum for dog medicine in a dry place at controlled room temperature, between 59° and 77°F (15-25°C).

Manufactured by: Novartis Animal Health

Additional Information

Bottle Size

dog 2-8lbs, 6PK, dog 25.1-50lbs, 6PK, dog 50.1-100lbs, 6PK, dog 8.1-25lbs, 6PK

Product Type

Nutrition Medicine, OTC Medicine, Rx Medicine


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