Sentinel Spectrum Chews for Dogs
Sentinel Spectrum Chews 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.
Tasty beef-flavored chew per month works immediately and for the next 30 days.

Sentinel Spectrum Chews 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.
Tasty beef-flavored chew per month works immediately and for the next 30 days.

Frequently Bought Together

Total Price

Sentinel Spectrum Logo

Ultimate Guide to Sentinel Spectrum Chews for Dogs

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

Sentinel Spectrum Chews 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 Chews 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.

  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?
Answer

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?
Answer

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?
Answer

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?
Answer

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?
Answer

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?
Answer

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?
Answer

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?
Answer

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?
Answer

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.

How do I know if Sentinel Spectrum Chewables have expired?
Answer

To check if they have expired, you should first look for the expiration date on the packaging, which should be clearly labeled with the month and year the medication will expire. If the packaging has been discarded, you can check the tablets themselves for a stamped or imprinted date on one side or edge of the tablet. Additionally, you can inspect the tablets for any discoloration or changes in texture, as expired tablets may change in appearance.

Are there any food or drug interactions with Sentinel Spectrum Chewables?
Answer

Yes, there are some known food and drug interactions with Sentinel Spectrum Chewables. These include interactions with other medications, high-fat meals, milk and dairy products, and antacids. However, it is recommended to avoid giving your dog milk or dairy products within one hour and antacids within two hours of giving the medication.

What should I do if my dog experiences any adverse reactions while taking Sentinel Spectrum Chewables?
Answer

If your dog experiences any adverse reactions while taking Sentinel Spectrum Chewables, it's important to contact your veterinarian immediately. However, some possible signs of an adverse reaction include vomiting, diarrhea, loss of appetite, lethargy, itching, and swelling of the face or limbs. Your veterinarian may recommend discontinuing the medication and may prescribe alternative treatments if necessary. In severe cases, your dog may require emergency medical treatment.

What should I do if my dog accidentally ingests too many Sentinel Spectrum Chewables?
Answer

In the event that your dog accidentally consumes an excessive amount of Sentinel Spectrum Chewables, you should call your veterinarian right away. Serious adverse reactions from an overdose can include vomiting, diarrhea, tremors, seizures, and even death. To get rid of the extra medication in your dog's system, your veterinarian can advise making them vomit. Additionally, they could offer supportive care like IV fluids and drugs to treat additional symptoms like seizures.

Should Sentinel Spectrum Chewables be used for chronic conditions in dogs?
Answer

No, it should not. Sentinel Spectrum Chewables are primarily used as a monthly preventative medication for heartworm disease, fleas, and other parasites in dogs. While it may have some benefits for chronic conditions, it is not specifically indicated for these conditions.

Can Sentinel Spectrum Chewables be used for acute conditions in dogs?
Answer

Yes, Sentinel Spectrum Chewables are not typically used to treat acute conditions in dogs. They are primarily used as a monthly preventative medication for heartworm disease, fleas, and other parasites.

Can Sentinel Spectrum Chewables be used for repetitive conditions in dogs?
Answer

No, it is not usually used for recurring conditions. While it may have some benefits for repetitive conditions, it is not specifically indicated for these conditions. If your dog has a repetitive condition, such as chronic ear infections or urinary tract infections, it's important to consult with your veterinarian to determine the appropriate treatment plan.

Can Sentinel Spectrum Chewables be used for whipworm prevention in dogs?
Answer

Yes, Sentinel Spectrum Chewables are effective for the prevention of whipworms in dogs. In addition to heartworm disease, fleas, and other parasites, Sentinel Spectrum Chewables also provide protection against whipworms when given monthly as directed by your veterinarian.

Can Sentinel Spectrum Chewables be used for lungworm prevention in dogs?
Answer

Sentinel Spectrum Chewables are effective for the prevention of some types of lungworms in dogs, but not all. Specifically, Sentinel Spectrum Chewables are effective against Angiostrongylus vasorum, a type of lungworm that can cause respiratory and cardiovascular problems in dogs. However, there are other types of lungworms, such as Crenosoma vulpis and Eucoleus aerophilus, that are not effectively prevented by Sentinel Spectrum Chewables.

Can Sentinel Spectrum Chewables be used for mite prevention in dogs?
Answer

No, Sentinel Spectrum Chewables are not effective for the prevention of mites in dogs. While they are effective against heartworm disease, fleas, and other parasites, they do not provide protection against mites, which are a type of arachnid that can cause skin irritation and other health problems in dogs.

Can Sentinel Spectrum Chewables be used for flea allergy dermatitis prevention in dogs?
Answer

Yes, Sentinel Spectrum Chewables can be effective for the prevention of flea allergy dermatitis (FAD) in dogs. FAD is a common allergic reaction to flea bites that can cause severe itching, skin irritation, and other health problems in dogs. Sentinel Spectrum Chewables can help prevent FAD by killing fleas and preventing flea infestations in your dog's environment.

Can Sentinel Spectrum Chewables be used on other animals besides dogs?
Answer

No, Sentinel Spectrum Chewables are specifically formulated for use in dogs and should not be used on other animals, as the dosage and active ingredients may not be appropriate for other species.

Can humans use Sentinel Spectrum Chewables?
Answer

No, Sentinel Spectrum Chewables are not formulated or approved for use in humans. They are specifically designed for use in dogs and should only be administered to dogs under the supervision of a veterinarian.

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

How to Order Prescriptions Online

1. Find the Right Product

Make sure it matches your pets prescription. Donโ€™t forget to compare the dosage for pills/capsules!

2. Add to Cart

Just like any other online store. Make sure the quantity matches whatโ€™s been prescribed by your vetinarian.

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!

If the prescription has any refills, processing your future orders for that medication can be expedited.

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Customer Reviews

Rating Summary 19 review(s)
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J
Sentinel Spectrum
VERIFIED PURCHASER

Good stuff!

Joni W. recommends this item.
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R
Sentinel Review
VERIFIED PURCHASER

Shipping was fast and my dog thinks this is a treat!

Ryan Lacey recommends this item.
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L
Sentinel Spectrum is great!!
VERIFIED PURCHASER

My dogs have done great using this over the years.

Laura Bracken recommends this item.
Was this review helpful? 1 1

G
QUICK, EASY
VERIFIED PURCHASER

Quick, complete, and easy.

G recommends this item.
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V
Great
VERIFIED PURCHASER

With PetCareRx is it easy, cheaper, works well for my dog

Vivi recommends this item.
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C
Great Customer Service/Product
VERIFIED PURCHASER

Easy ordering on line and quick response

Cindy Wingate recommends this item.
Was this review helpful? 0 0

B
A medicine he can't rub off!
VERIFIED PURCHASER

Prior to this chewable, I had attempted to use the typical liquid flea medications for my dog child but the wormy little daschund would twist and contort his body all over the rug and my blankets to rub it off. The meds would then maybe last a week on him and he would get fleas...my blankets and rugs however are flea free! Anyways, I finally switched to Sentinel chewables and it has been a huge game changer! I just give him the chewable and he gobbles it all up because he'll eat anything. I haven't seen a single flea on Benji since we switched

Benji's Mom recommends this item.
Was this review helpful? 0 0

A
Works as advertised, easy to administer
VERIFIED PURCHASER

The chewable form makes this medicine super simple to administer; my dog thinks it's a treat! I've had 3 dogs take this chewable and none have ever had any of the issues Sentinel Spectrum is designed to prevent, so I guess it's doing its job!

Adam recommends this item.
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K
Sentinel Spectrum Chewables for Dogs
VERIFIED PURCHASER

We have 2 indoor/outdoor dogs so the risk of fleas is a little greater than having a single dog. Sentinel Spectrum works great! There is always the risk of them getting fleas from other dogs, but if that happens, we never find fleas on us or in our home.

Keri recommends this item.
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E
No stress, speedy shipping
VERIFIED PURCHASER

I use Sentinel Spectrum because I have an australian shepherd that drinks brackish water ALL the time. She just got a complete bill of health. 100% well in stool, blood etc. So Spectrum does the job. (I live in Maine and water other than her dish is everywhere!

Elise M Ford recommends this item.
Was this review helpful? 0 0

D
Sentinel
VERIFIED PURCHASER

This is what my dog was started on when we got him from the Humane society. We have since kept him on it and aside from it only being available through online retailers or special ordered at retail pharmacies. it has worked as advertised.

David C recommends this item.
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D
Save money, no stress care.
VERIFIED PURCHASER

I find working with PetCare Rx. to be easy and straight forward. The product Sentinel Spectrum has kept my Australian Shepherd roaming in fresh, salt, brackish waters and woods, marshes etc. without any health issues and no evidence of unwanted inside creatures!

Dia recommends this item.
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K
Great Purchase
VERIFIED PURCHASER

Works great!

Kimbo recommends this item.
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L
My dog would not eat them
VERIFIED PURCHASER

My dog would not eat them, I am not even sure she got all the medication into her each month. She eats everything I will not be purchasing these again. Too much wasted money.

Lizanne recommends this item.
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D
It works IF your dog will eat it
VERIFIED PURCHASER

My dog hatted this chew and he eats anything! I had to chop it up into tiny pieces and mix it with food to get him to eat it.

Deal recommends this item.
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K
HAPPY!
VERIFIED PURCHASER

Happy and easy for my loving companion, Jackson Browne.

Kim recommends this item.
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C
Sentinel Spectrum is Fantastic!
VERIFIED PURCHASER

I used to purchase Trifexis for my 4 dogs - and it was such a struggle to get them to take it because it tasted so bad - but Sentinel Spectrum is fantastic - I have no trouble getting all 4 dogs to eat it right out my hand! I haven't seen a flea and no heartworms since they've been on this- and the price through PetCareRX can't be beat!

Christie recommends this item.
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K
Great
VERIFIED PURCHASER

Dog loves, will purchase again1

Karen recommends this item.
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D
My Dog Loves them.
VERIFIED PURCHASER

The price of this product is great. My dog loves this and it makes it easy to give it to her.

devils39 recommends this item.
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