Sentinel Spectrum Chewables for Dogs
Sentinel Spectrum Chewables for Dogs
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At a Glance
A combination of three active ingredients protects dog parasite infestations.
Inhibits flea egg from becoming larvae and from larvae reaching adulthood.
Effective heartworm disease preventative and controls gastrointestinal worms.
Kills tapeworms and inhibits insectsโ€™ healthy growth into adulthood.

Sentinel Spectrum Chewables for Dogs

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At a Glance
A combination of three active ingredients protects dog parasite infestations.
Inhibits flea egg from becoming larvae and from larvae reaching adulthood.
Effective heartworm disease preventative and controls gastrointestinal worms.
Kills tapeworms and inhibits insectsโ€™ healthy growth into adulthood.


Ultimate Guide to Sentinel Spectrum Chewables for Dogs

Meet the Six-in-One Parasite Preventer: Sentinel Spectrum Chewables for Dogs!

Sentinel Spectrum Chewables for Dogs is a prescribed monthly beef-flavored chewable that protects your dogs by preventing, controlling, and killing six dangerous parasites - heartworms, whipworms, hookworms, roundworms, tapeworm, and fleas. Sentinel Spectrum ensures that your pup is in their healthiest condition.

How does Sentinel Spectrum work?

Sentinel Spectrum for Dogs is a medication with three active ingredients - Milbemycin Oxime, Lufenuron, and Praziquantel.

Milbemycin Oxime is a powerful parasiticide and an anthelmintic (i.e., dewormer). It is 100% effective heartworm disease preventative, and also controls three dangerous gastrointestinal worms (i.e., adult roundworms, hookworms, and whipworms) by acting on their nervous system.

Lufenuron is an insecticide and insect growth regulator (IGR). As flea birth control, Lufenuron disrupts the flea cycle both by preventing larvae from reaching adulthood and inhibiting growth within eggs. The development of protein chitin that builds a larval's exoskeleton causes larvae to die once inner organs are exposed to air after hatching.

And finally, the third active ingredient Praziquantel is an anthelmintic that expels anti-parasitic worms like trematodes (e.g, tapeworms) by causing muscular spasms that ultimately kill the parasitic worms. Praziquantel is also an Insect Growth Regulator (IGR) that inhibits newly hatched insect larvae from reaching adulthood or reproducing.

How is Sentinel Spectrum for Dogs administered?

Sentinel Spectrum for Dogs is an oral, once-monthly treatment and protects your dog for the next 30 days. These beef-flavored Sentinel Spectrum's directions are that the chews are to be split into chewable pieces and hidden in food. Make sure that your dog consumes the entire chewable, especially for adequate absorption of Lufenuron.

Sentinel Spectrum chews are used year-round for maximum prevention effectiveness.

Sentinel Spectrum's doses are based on your dog's body weight which then determines the milligram (mg) amount of each active ingredient per month. See the Sentinel Spectrum dosage chart below:

Dog's Body Weight Milbemycin Oxime (mg) Lufenuron (mg) Praziquantel (mg)
Sentinel Spectrum 2 - 8 lbs. (Orange) 2.3 46 22.8
Sentinel Spectrum 8.1 - 25 lbs. (Green) 5.75 115 57
Sentinel Spectrum 25.1 - 50 lbs. (Yellow) 11.5 230 114
Sentinel Spectrum 50.1 - 100 lbs. (Blue) 23 460 228

All Sentinel Spectrum boxes are available in 6 (month) packs and 12 (month) packs.

What dogs should not be treated with Sentinel Spectrum?

Dogs that shouldn't take Sentinel Spectrum are those that are below 6 weeks old or weigh less than 2 pounds; those that take other medication that will have a negative interaction; and those that are already taking an alternate heartworm medication. Breeding, pregnant, and lactating females have not been evaluated.

What is the Sentinel Spectrum for Dogs' side effects of which you should be aware?

Test for heartworm disease before deworming therapy or before using Sentinel Spectrum for Dogs.

Sentinel Spectrum's common negative reactions reported are vomiting, diarrhea, incoordination, lethargy, decreased appetite, itching, hives, convulsions, hypersalivation, and labored breathing. Contact your veterinarian if any of the above or other effects occur after ingesting the Sentinel Spectrum chews.

Frequently Asked Questions
  1. What does the Sentinel Spectrum for dogs reviews say?

    Sentinel Spectrum reviews rate 4.5+ out of 5 stars. Most reviewers say that they trust Sentinel Spectrum as their only flea and heartworm prevention treatment for their furry best friend.

  2. How does the medication prevent heartworm (Sentinel Spectrum) in dogs?

    Sentinel Spectrum prevents vicious heartworm disease that is transmitted from mosquito bites, especially with their 100% heartworm preventative active ingredient Milbemycin Oxime.

  3. How long does Sentinel Spectrum take to work?

    Sentinel Spectrum chew's effective combination begins to work IMMEDIATELY, whether preventing and controlling fleas or as a heartworm prevention formula that distributes through the dog's system and into the dog's body fat.

  4. What is Sentinel Spectrum used for in dogs?

    Sentinel Spectrum Chewables for Dogs is a six-in-one oral chew that prevents, controls, and kills internal and external parasites from heartworm to flea. Its active ingredients work together as effective flea birth control, heartworm disease prevention, and assassin for intestinal tapeworms, roundworms, hookworms, and whipworms.

  5. Is Sentinel Spectrum for cats?

    Sentinel Spectrum was only manufactured for dogs, and therefore is not for cats. There are a variety of cat equivalents. Look for an effective heartworm preventative called Revolution Plus for Cats, which is a monthly topical solution that treats 6 parasites (i.e., fleas, heartworms, roundworms, hookworms, ticks, and ear mites) in 1 spot-on cream.

  6. What is the difference between Sentinel and Sentinel Spectrum?

    Both medications have two active ingredients - Milbemycin Oxime and Lufenuron. Together, they are a 100% effective heartworm disease preventative and acts as a monthly layer of protection against gastrointestinal worms. Sentinel Spectrum adds a third anthelmintic ingredient Praziquantel that ultimately kills tapeworms.

  7. Is Sentinel Spectrum for puppies?

    Sentinel Spectrum can be administered to puppies that are at least 6 weeks old and weigh 2 pounds.

Concluding Thoughts

The most important thing that you should know about Sentinel Spectrum is its six-in-one power to protect your dog from internal and external parasites. The medication is popularly used as an effective heartworm disease preventative. Your pup will be in the healthiest, pest-free condition that they can be.

DISCLAIMER: FDA law restricts Sentinel Spectrum Chewable for Dogs only on order or prescription of a licensed veterinarian for the best pet health care advice. Ask your veterinarian or consult with one of our pet care specialists at 1-800-844-1427. This informative article is not meant to substitute for the diagnosis, treatment, and professional advice from your veterinarian or other qualified professionals regarding a medical condition. Ask your veterinarian if it's a good idea to treat all of the animals in your household to control intestinal parasites.

  • Sentinel Spectrum Brand
  • Heartworm & Deworming Pharmacy
  • Merck Animal Health Manufacturer
  • Mature Adult Life Stage
  • Senior Life Stage
  • Puppy Life Stage
  • Adult Life Stage
  • Oral Application
  • Dog Pet Type

What is Sentinel Spectrum for Dogs?

Sentinel Spectrum protects your pet dog from tapeworms, intestinal worms, heartworm, and fleas. The bacon and beef flavors often liked by dogs allow them to accept the medicine directly from your hand. As it is in tablet form and therefore, there are no restrictions to your pet being washed or swimming post-treatment. The key benefits of Sentinel Spectrum are: It protects your pet from six varieties of parasites, namely fleas, tapeworm, roundworm, hookworm, whipworm, and heartworm. The lufenuron present in the medicine prevents the flea eggs from hatching. You need to give your pet a dosage of one tablet every month.

Is Sentinel Spectrum Safe for Pregnant Dogs?

Yes, pregnant and lactating dogs can be given Sentinel Spectrum and it is completely safe. Although Sentinel Spectrum is a safe medicine, it can have some adverse effects. Check the Sentinel medicine for its ingredients and ensure that your pet dog is not sensitive to any of them. Only give medicine to your pregnant dog if it is prescribed by a registered vet. Although being considered safe, go with the advice of your veterinarian, whether to use it or not.

What Does Sentinel Spectrum for Dogs Prevent?

Ease out your petโ€™s flea and heartworm issues with Sentinel Spectrum. One dose per month can protect your dog from six varieties of parasites, namely fleas, tapeworm, roundworm, hookworm, whipworm, and heartworm. The medicine requires a prescription from a registered veterinarian.

Is Sentinel Spectrum Good for Dogs?

If your dog is facing parasite-related issues, then Sentinel Spectrum can be of good help for its prevention. It prevents fleas reproduction and is potent against heartworms in dogs. The dogs like the beef flavor and take it as a treat rather than a medicine. It is also very effective against intestinal worms like whipworms, hookworms, tapeworms, and roundworms and destroys the flea eggs before hatching. Sentinel Spectrum should only be administered on dogs exceeding six months and should only be given once a month.

What is the Difference Between Sentinel and Sentinel Spectrum for Dogs?

Both Sentinel and Sentinel Spectrum are very effective and the best medicines in their category. Both the Sentinel medicines have Lufenuron and Milbemycin Oxime as their main ingredients. Both can be bought on prescription only, comes in beef flavor, and are in chewable form. The dosage of both the medicines is also the same and should be taken only once a month. Both provide effective results against heartworms and fleas and prevent the flea eggs from hatching. Both are safe to be used in pregnant, breeding, and lactating dogs. They both are also safe to be used in puppies. Sentinel can be used in puppies over the age of 4 months. However, Sentinel Spectrum can only be given to puppies over six months and weigh more than 2 pounds. The second difference between the two medicines is that Sentinel Spectrum has one additional ingredient, Praziquantel. This extra content is potent against tapeworms.

Will Sentinel Spectrum Kill Fleas?

The medicine does not kill the adult fleas instantly but kills the fleas at very early stages and thus stops the flea life cycle. The grown-up fleas that we usually see on our pet dog are only a minute problem. But there are several thousand flea eggs, pupae, and larvae present in dog beddings, floorboards, carpets, etc. These then turn into adult fleas that come on your pet dog. Stopping this environment stage is important, which is the role of Sentinel Spectrum. It destroys the flea eggs and larvae and stops their cycle of converting into adult fleas. Over a few weeks to even a couple of months, Sentinel Spectrum clears the home environment and prevents your pet dog from further parasitic infections.

Can my Dog Still Get Fleas with Sentinel?

Sentinel Spectrum cannot create an invisible shield around your pet that can prevent fleas. There are situations where your pet accidentally gets in contact with another flea-infected dog or area and can also get infected with fleas. However, if your pet dog is getting regularly medicated with Sentinel, then these adult fleas will not be able to reproduce further.

Can my Dog take Sentinel and Nexgard at the Same Time?

Yes, and itโ€™s a good combination. Sentinel cannot kill adult fleas, while NexGard is effective against ticks and fleas. On the other hand, Sentinel gives protection from heartworm, whipworm, hookworm, and roundworm while also preventing the reproduction cycle of fleas.

Can a Dog Get Worms on Sentinel?

No, your pet dog cannot get worms if on regular Sentinel medication. Sentinel Spectrum is an effective deworming medicine developed by Novartis. It is the most preferred medicine that treats and prevents hookworms, roundworms, whipworms, and tapeworms. The effective ingredients of Sentinel also eliminate the microfilariae found in the blood, which prevents any heartworm-related diseases. Only one dose of Sentinel Spectrum is good enough to kill all types of worms and infections.

Active ingredients: milbemycin oxime, lufenuron, and praziquantel

IMPORTANT SAFETY INFORMATION: Dogs should be tested for heartworm prior to use. Mild hypersensitivity reactions have been noted in some dogs carrying a high number of circulating microfilariae. Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. For complete product information refer to the product insert.

Doses are based on body weight of your dogs. Doses are intended for once monthly treatments.

Sentinel Spectrum is manufactured by Merck Animal Health
Option UPC/SKU
8.1-25 lbs 6 Chewables 716688097521
25.1-50 lbs 6 Chewables 716688097538
50.1-100 lbs 6 Chewables 716688097545

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1. Find the Right Product

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2. Add to Cart

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3. Tell Us About Your Pet and Vet

Answer some questions during checkout and weโ€™ll contact your vet and verify the prescription for you. You can also mail us the written prescription.

4. Thatโ€™s It!

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