Sentinel

4.9 out of 5 Customer Rating
Sentinel is rated 4.5 out of 5 by 919.
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Starts $68.70 $48.09
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Sentinel

4.9 out of 5 Customer Rating
Sentinel is rated 4.5 out of 5 by 919.
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Starts $68.70 $48.09
Most orders ship the same day
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Reviews

Rated 5 out of 5 by from I have given both of my girls Sentinel for a long time. Molly just turned 10 and Allie will be 8 in August and they have both been negative for all their lives. So I would highly recommend this to anyone!
Date published: 2020-05-01
Rated 5 out of 5 by from Great product for our bulldog I have had our bulldog on Sentinel since she was a pup. Her mother and a sibling had tested positive for an allergy to Ivermectin, a key ingredient in other heartworm products, so the breeder recommended Sentinel. Now 8 years old, our dog has done very well without any side effects.
Date published: 2020-05-01
Rated 5 out of 5 by from Sentinel I have been using this product for over 10 years. It works and I have never had a flea problem. Great price. Will continue to order Sentinel fm this site for many more years.
Date published: 2020-04-30
Rated 5 out of 5 by from 1800PetMeds saved the day! I left town because of the Coronavirus and forgot my fur babies meds. 1800PetMeds worked with my vet and they delivered them within two days. Thank you thank you thank you!!!
Date published: 2020-04-19
Rated 4 out of 5 by from SENTINEL REVIEW I bought this for both my doggies and it seems to be working. I called and asked our vet if it was OK. She said yes but that it doesn't protect against ticks and that we need to get additional meds for the tick prevention.
Date published: 2020-04-16
Rated 5 out of 5 by from sentinel I have been giving these to Bodie for many, many years. Never had any trouble. Never had a flea. I love them.
Date published: 2020-04-10
Rated 5 out of 5 by from
Date published: 2020-04-04
Rated 5 out of 5 by from Great product & awesome customer service! My Eight year old dog is 3lbs and I worry about giving her meds because of her size. Sentinel works without any side effects and it’s cheaper to purchase with PetMeds! Had there been an issue, PetMeds has an UNCONDITIONAL money back guarantee!
Date published: 2020-03-29
Rated 5 out of 5 by from happy with my first order! It was less expensive than going through the vet and arrived quicker than expected!
Date published: 2020-03-29
Rated 1 out of 5 by from Save your money I purchased this for my 105 lb Golden based on previous reviews. Should have went with Trfexis. 4 days after giving him the pill he had fleas. Took him to groomer then to Vet and picked up Trifexis. An hour or so later noticed a couple of dead fleas. Next day, flea free. Next time I will spend a little more money and get a product I know works.
Date published: 2020-02-22
Rated 5 out of 5 by from So glad I found you. Your prices are better than the cents
Date published: 2020-02-20
Rated 5 out of 5 by from gentle and easier to feed My dog kept refusing, then puking up Trifexis, so I switched her to Sentinel. It's a smaller, more palatable pill that she takes much more easily but still protects her from worms as well as fleas so I don't have to use the messy back goo meds.
Date published: 2020-02-19
Rated 5 out of 5 by from Love this product Have bought this after the vet recommended it and only had fleas one time Easy to get rid of with no problem even out of the house .I love it.
Date published: 2020-01-29
Rated 1 out of 5 by from When I put this product on my dog she continued to have fleas and seemed to scratch even more. I thought maybe after I applied the second dose the following month things would get better, but it did not. I will not be purchasing this product again. I do not recommend it.
Date published: 2020-01-06
Rated 5 out of 5 by from Very effective We use Sentinel for all three of our dogs, and they have always had clean checkups at the vet. No problems at all.
Date published: 2019-11-30
Rated 5 out of 5 by from Works great. My dogs has never had a problem.
Date published: 2019-11-26
Rated 4 out of 5 by from Inexpensive great value the dogs really like it
Date published: 2019-11-16
Rated 5 out of 5 by from Great product Emma started out on Sentinel & the vet recommended Trifexis! After researching & finding out that the 2 products did exactly the same things, I switched her back to Sentinel & told the vet why I was doing so!! The results are very satisfying!!
Date published: 2019-11-03
Rated 5 out of 5 by from Pleased I found out about Pet Meds from my son who purchases meds for his dogs from this company. So pleased with the good prices and fast delivery!
Date published: 2019-11-01
Rated 4 out of 5 by from 2 Protections in 1 tablet I love sentinel because my dog gets both Heartworm and flea protection. My only complaint is that I have to hide it in canned cat food because he does not like the taste. It must have a strong flavor as he even spits it out if I wrap it in canned dog food.
Date published: 2019-10-29
Rated 5 out of 5 by from Sentinel I’ve used Sentinel for my dogs for years. The fact that it is a heart worm preventative and helps with fleas too is a big plus. My dogs do better with a small pill and Sentinel is small. It’s perfect !
Date published: 2019-10-28
Rated 5 out of 5 by from Excellent protection we have always used Sentinel for our dogs. we have never had a flea problem whatsoever. Of course our dogs are inside 98% of the time, but we have never seen fleas on our pets. No side effects either. what's even better is Sentinel is quite a bit cheaper than others like Trifexis. And we get the same results. Highly recommend.
Date published: 2019-10-09
Rated 5 out of 5 by from Very Professional and Honest !!! I buy my Sentinel for Buddy from 1800 Pet Meds because they deliver right to my daughter's house and the product is top quality and recommended by my vet. Best of all, it is much cheaper than buying it through my vet !!! Well satisfied and recommend this company 100% !!!
Date published: 2019-10-08
Rated 5 out of 5 by from Trustworthy It is easy to order. Quick response. It works!
Date published: 2019-09-29
Rated 5 out of 5 by from Super easy My dog loves taking his monthly pill. He takes it like it's candy. It keeps him protected and it is so easy to use!
Date published: 2019-09-24
Rated 5 out of 5 by from Well tolerated! Have been using this for almost 10 years without any problems! Just hide it in a piece of meat or cheese and down it goes!
Date published: 2019-09-23
Rated 5 out of 5 by from Great product, cost effective and convenient Skimpy has been on the chewables for over a year now and they work great and are more cost effective and convenient and I appreciate the by mail service. Skimpy is a 4.5Lb chihuahua 10 yrs old and has a heart murmur. He's doing great.
Date published: 2019-09-07
Rated 5 out of 5 by from Sentinel Flavor Tabs Sweet Pea is doing very well on Sentinel Flavor Tabs. The veterinarian I take Sweet Pea to, Dr. May, in Brandon, MS, does not sell the Flavor Tabs, only the chewables. I have tried Sweet Pea on the Sentinel monthly chewables and it does not agree with her as well.
Date published: 2019-08-22
Rated 5 out of 5 by from Easy to work with and very helpful live chat. Just received my first order. Came within days of ordering.
Date published: 2019-08-19
Rated 5 out of 5 by from This product is wonderful I have never seen a flea or tick on my dogs ever! They have never had any kind of parasite I’ve been giving my dogs this for over 10 years.
Date published: 2019-08-17
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Questions

Should I give additional monthly flea and tick pill with Sentinel?

Asked by: Jen612
Yes, it is safe to give an additional flea and tick prevention since Sentinel does not kill fleas, just prevents flea eggs from hatching.
Answered by: SuzyCVT
Date published: 2020-05-22

Can l just oder this product for my dog 

Asked by: Spark
When you order, you must provide your veterinarian's information and PetMeds will contact him/her for prescription approval.
Answered by: SuzyCVT
Date published: 2020-05-13

Does my dog need to be tested for heartworms before taking sentimental?

Asked by: Rocco
Sentinel is a heartworm preventative that has to be approved by your veterinarian. Your veterinarian may need to see your dog prior to approving it.
Answered by: Shari PetMed Pro
Date published: 2020-04-23

Can I give this to my dog with nexguard? 

Asked by: Rhyno120
Yes, you can give both Sentinel and NexGard to your dog as the flea controls act in different ways...Sentinel only prevents the fleas from reproducing, it does not kill them, and the NexGard will kill the fleas.
Answered by: SuztCVT
Date published: 2020-04-18

Does Sentinel cause skin issues? Ever since I started to give my dog Sentinel she’s developed dry, itchy scabs all over her body.

Asked by: Philly1711
Every dog may have a different reaction. We will gladly help with a refund or exchange. Please give us a call 800-738-6337. Please consult with your veterinarian about the side effects.
Answered by: Shari PetMed Pro
Date published: 2020-04-13

Dog weighs 9 lbs. She will not chew any Medication; I've tried everything. Can I forcefully feed this? Is it small enough to force her to swallow it?

Asked by: MollieO
You may want to purchase our Pet Piller that we offer. The Pet Piller is a long plastic barrel with a plastic plunger with a soft rubber tip. The medication is placed inside, the Pet Piller is placed inside your pet's mouth, and like a syringe, the plunger is pushed to eject the pill. Please see the link below to view this product. Here is the link: https://www.1800petmeds.com/Pet+Piller-prod10655.html?Ntt=pet+piller
Answered by: Cherley Petmeds Pro
Date published: 2020-04-11

I have an 11-week old puppy that is approx. 15 lbs. What size pack should I purchase for her as she is expected to grow about 1 lb/week. We just administered the first dose April 1. 

Asked by: ccinkansas
You may want to purchase single doses from your veterinarian until your furry baby is fully grown. This is because we only carry this product in 6 or 12 dose packages.
Answered by: Cherley Petmeds Pro
Date published: 2020-04-07

Our dog weighs 130. What would be the proper pill dose?

Asked by: Bhughes
Your large furry friend will take one dose of the 51-100 pound size and one dose of the 26-50 pound size.
Answered by: SuzyCVT
Date published: 2020-04-03

What is the difference between Sentinel and Sentinel Spectrum?

Asked by: Tracy B
The difference between Sentinel and Sentinel Spectrum is that Sentinel Spectrum has one more ingredient that kills tapeworms.
Answered by: SuzyCVT
Date published: 2020-04-03

Can this pill be cut or crushed?

Asked by: 123karra456
If you are crushing or cutting to help put in the food for your dog you can but please be sure your furry baby takes the entire pill.
Answered by: Shari PetMed Pro
Date published: 2020-03-11

Does sentinel require a prescription

Asked by: Joy1
Yes.
Answered by: Shari PetMed Pro
Date published: 2020-05-02

What is the shape of the pill,?

Asked by: Moochie1
Pentagon shape pill.
Answered by: Shari PetMed Pro
Date published: 2020-02-17

Do I need a prescription?

Asked by: Sissy
Yes. Our pharmacy contacts your veterinarian to obtain the prescription approval for you prior to shipment.
Answered by: Cherley Petmeds Pro
Date published: 2020-01-23

My dog (4lb chi) takes K- Brovet for seizures. Can she take sentinel? She used to take it before and had no side effects.

Asked by: ilyl
Sentinel is generally considered safe in pets with seizures, however some pets with seizures may be sensitive to Sentinel and/or other flea and tick medications. It would be best to discuss your pets situation with your veterinarian to ensure the best medication is picked
Answered by: Kelly Paterson PharmD
Date published: 2020-01-11

Is this product helpful in preventing blastomycosis?

Asked by: Marsha mj
Sentinel is A monthly oral preventive that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs.
Answered by: Lisa M
Date published: 2020-01-09

Does this take care of ticks

Asked by: Virgie
Sentinel is not effective against ticks.
Answered by: Cherley Petmeds Pro
Date published: 2020-01-08

What if my dog weighs over 150lbs?

Asked by: KieshuS
For dogs over 150 lbs, give 2 doses at the same time for dogs 51-100 lbs.
Answered by: Cherley Petmeds Pro
Date published: 2019-12-13

Our dog who recently passed away weighed 13 -14 pounds. We plan on getting a smaller dog under 10 pounds. Can we break the tabs in half and use what we have left? It will be a rescue, heartworm tested of course!

Asked by: Dogwalker 501
The manufacturer does not recommended breaking Sentinel tablets. Consult your veterinarian for his/her opinion.
Answered by: Lisa M
Date published: 2019-11-10

what is the difference between Sentinel and Sentinel Spectrum?

Asked by: Stacy
Sentinel prevents heartworms, controls hookworms, roundworms and whipworms and sterilizes fleas. Sentinel Spectrum does all that plus also treats for tapeworms.
Answered by: SuzyCVT
Date published: 2020-03-12

Can I not order this without prescription?

Asked by: Robin
Sentinel requires a veterinarian's prescription.
Answered by: SuzyCVT
Date published: 2020-03-05

If my dog os 13 lbs and 14.5 years old and is having trouble tolerating the 11-25lb dose can we go down in dosage to the 2-10 lbs and still have it effective

Asked by: Cocoa
Unfortunately, the lower dose will not be effective. Consult with your veterinarian to see if perhaps a different product would be better tolerated by your senior furry friend.
Answered by: SuzyCVT
Date published: 2019-10-04

what if my pet is right on the border between two sizes

Asked by: Debbie
Sentinel is very safe so unless your veterinarian recommends your particular pet to be on the smaller size, I would go with the larger size.
Answered by: SuzyCVT
Date published: 2020-03-21

Does this product protect against ticks?

Asked by: Mikey
No, Sentinel does not protect against ticks. It is safe to use any of the available flea and tick products with Sentinel.
Answered by: SuzyCVT
Date published: 2019-10-04

Will Sentinel KILL fleas ??

Asked by: Barbara
Lufenuron, the ingredient in Sentinel, prevents most flea eggs from hatching or maturing into adults and thus prevents and controls flea populations by breaking the life cycle. It does not kill fleas.
Answered by: Lisa M
Date published: 2019-08-01

If a 235 pound male accidentally took the dosage for a large breed dog would he be ok? 

Asked by: Zeke21
Contact your physician as soon as possible if you accidentally ingested Sentinel.
Answered by: Lisa M
Date published: 2019-07-19

How old should puppy be to start sentinel

Asked by: Bruin
Sentinel may be administered to dogs and puppies 4+ weeks of age, weighing 2+ lbs.
Answered by: Lisa M
Date published: 2019-06-28

Is this product made in USA?

Asked by: Genie
Yes. Sentinel is made by Virbac USA.
Answered by: Cherley Petmeds Pro
Date published: 2019-10-04

does my puppy needs to take Heartguard also or just Sentinel will do the job?

Asked by: Shaggy
Sentinel is a monthly oral preventive that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. There is no need to administer Heartgard as well.
Answered by: Lisa M
Date published: 2019-06-17

Hiw quickly does medicine start to protect and work?

Asked by: LOTX
Sentinel is the only monthly oral preventive that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. It begins to work within 3 hours of administration.
Answered by: Lisa M
Date published: 2020-03-12

Is a prescription needed for easy refills?

Asked by: Cyndi
If you have refills available from the prior prescription, your order ships out immediately. Otherwise, we contact your vet to obtain a new prescription approval for your easy refill reminder.
Answered by: Cherley Petmeds Pro
Date published: 2019-07-13
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What is Sentinel?

Sentinel is the only monthly oral preventive that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. Sentinel requires a prescription from your veterinarian.

For:

Dogs and Puppies (4+ weeks of age, weighing 2+ lbs)

Benefits:

  • Comes in palatable flavored tabs
  • Easy to administer just once a month

How does Sentinel work?

Milbemycin oxime eliminates the tissue stage of heartworm larvae and the adult stage of hookworm, roundworm, and whipworm infestations. Lufenuron, the other active ingredient, is an insect development inhibitor that breaks the flea life cycle by inhibiting egg development. Lufenuron prevents most flea eggs from hatching or maturing into adults and thus prevents and controls flea populations by breaking the life cycle.

Cautions:

Side effects are rare, though some pets may exhibit vomiting, depression, drowsiness, itching, hives, loss of appetite, diarrhea, or seizures, hypersalivation, and weakness. If these or other symptoms develop contact your veterinarian. It's important to maintain good personal hygiene, since humans can contract hookworms and roundworms. It's also important to eliminate fleas and to not feed your pet rodents or uncooked meat or fish. To prevent re-infection, clean up stools on a daily basis. Consult your veterinarian for pregnant or lactating dogs.

Brand Name:

Sentinel (Virbac)

Generic Name:

Milbemycin Oxime (mil-beh-my-sin ox-eem) and Lufenuron (lew-fen-your-on)

What is the most important information I should know about Sentinel?

Sentinel is a prescription medication FDA-approved for use in dogs. Sentinel is available as artificial beef flavored (derived from pork and soy protein) chewable tablets. This medication should be given once a month year-round.

What should I discuss with my veterinarian before giving Sentinel to my pet?

Tell your veterinarian if your pet has ever had an allergic reaction to the medication.

How should Sentinel be given?

Give Sentinel exactly as directed by your veterinarian. If you do not understand the directions ask your pharmacist or veterinarian to explain them to you. The usual dose of Sentinel for dogs 2 to 10 pounds is 1 Flavor Tab every month (Brown Box), 11 to 25 pounds is 1 Flavor Tab every month (Green Box), 26 to 50 pounds is 1 Flavor Tab every month (Yellow Box) and 51 to 100 pounds is 1 Flavor Tab every month (White Box). For dogs over 100 pounds give the appropriate combination of tablets. To ensure adequate absorption, always administer Sentinel to dogs immediately after or in conjunction with a normal meal. Heartworm testing should be performed prior to the start of prevention therapy. If your pet is off Sentinel for 6 months or less, re-start the medication and test after 6 months since microfilaria, that take 6 months to mature, will result in a positive test result. Store Sentinel in a dry place at controlled room temperature, between 59-77F (15-25 C). Do not remove the tablet from its wrapper until ready to give the medicine. Keep this medication away from children and pets. Consult your veterinarian for pregnant or lactating dogs.

What are the possible side effects of Sentinel?

Side effects of Sentinel are rare although some pets may exhibit vomiting, depression, drowsiness, itching, hives, loss of appetite, diarrhea, or seizures, hypersalivation, and weakness. If these or other symptoms develop contact your veterinarian.

What happens if I miss giving a dose of Sentinel?

If a dose is missed and a 30-day interval between dosing is exceeded, administer Sentinel immediately and resume the monthly dosing schedule. If Sentinel replaces daily diethylcarbamazine (DEC) for heartworm prevention, the first dose must be given within 30 days after the last dose of DEC.

What happens if I overdose my pet on Sentinel?

Contact your veterinarian immediately.

What should I avoid while giving Sentinel to my pet?

Because humans can contract hookworms and roundworms from pets, it is important to maintain good personal hygiene. It is also important to eliminate fleas on your pet and in the household.

What other drugs will affect Sentinel?

While Sentinel is safe to use in dogs at risk for MDRI-allele mutation (Australian Shepherds, Collies, Shelties, etc.), unless tested normal, caution is advised if your pet is also being given amiodarone (Cordarone), azole antifungals such as ketoconazole, carvedilol (Coreg), cyclosporine (Atopica), diltiazem (Cardizem), erythromycin (Ery-Tabs) or clarithromycin (Biaxin), quinidine, spironolactone (Aldactone), tamoxifen, and verapamil (Calan). Do not give Sentinel to your pet if already giving an alternate heartworm medication.

Sentinel Directions:

  • Give Sentinel Flavor Tabs once a month on the same day of each month year-round.
  • Sentinel Flavor Tabs is for use in dogs only. Do not give to cats.
  • Watch your dog closely following dosing to be sure the entire dose has been swallowed. If it is not completely swallowed, give one more full recommended dose as soon as possible.
  • To ensure adequate absorption, always administer Sentinel to dogs immediately after or in conjunction with a normal meal.
  • Sentinel has no effect on adult fleas, but controls flea populations by breaking the flea life cycle at the egg stage.
  • To speed control of flea infestation, products that kill adult fleas like Capstar Flea Treatment Tablets may be used temporarily with Sentinel depending on the severity of the infestation.
  • Treatment may begin at any time of the year.
  • It is important to treat all dogs in the household for fleas. Cats in the same household should be treated with approved products for heartworm prevention for cats.
Tip:

Do not remove Sentinel from its wrapper until ready to give to your pet.

Sentinel Dosage for Dogs/puppies: (4+ weeks of age, weighing 2+ lbs)

Dogs/puppies: (4+ weeks of age, weighing 2+ lbs)
WeightDosage
2-10 lbsGive 1 Flavor Tab every month (Brown Box)
11-25 lbsGive 1 Flavor Tab every month (Green Box)
26-50 lbsGive 1 Flavor Tab every month (Yellow Box)
51-100 lbsGive 1 Flavor Tab every month (White Box)
Over 100 lbsGive combination of Flavor Tabs based on weight
Sentinel Dosage for Cats:
Cats
Do not use!
Sentinel Dosage for Horses:
Horses
Do not use!

Storage:

Should be stored at room temperature between 59° and 77° F.

Sentinel for Dogs Ingredients:

Sentinel Brown for Dogs 2-10 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime2.3 mg
Lufenuron46 mg
Sentinel Green for Dogs 11-25 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime5.75 mg
Lufenuron115 mg
Sentinel Yellow for Dogs 26-50 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime11.5 mg
Lufenuron230 mg
Sentinel White for Dogs 51-100 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime23 mg
Lufenuron460 mg

What is Sentinel?

Sentinel is the only monthly oral preventive that guards against heartworms, adult roundworms, adult hookworms, whipworms, and prevents the development of flea eggs. Sentinel requires a prescription from your veterinarian.

For:

Dogs and Puppies (4+ weeks of age, weighing 2+ lbs)

Benefits:

  • Comes in palatable flavored tabs
  • Easy to administer just once a month

How does Sentinel work?

Milbemycin oxime eliminates the tissue stage of heartworm larvae and the adult stage of hookworm, roundworm, and whipworm infestations. Lufenuron, the other active ingredient, is an insect development inhibitor that breaks the flea life cycle by inhibiting egg development. Lufenuron prevents most flea eggs from hatching or maturing into adults and thus prevents and controls flea populations by breaking the life cycle.

Cautions:

Side effects are rare, though some pets may exhibit vomiting, depression, drowsiness, itching, hives, loss of appetite, diarrhea, or seizures, hypersalivation, and weakness. If these or other symptoms develop contact your veterinarian. It's important to maintain good personal hygiene, since humans can contract hookworms and roundworms. It's also important to eliminate fleas and to not feed your pet rodents or uncooked meat or fish. To prevent re-infection, clean up stools on a daily basis. Consult your veterinarian for pregnant or lactating dogs.

Brand Name:

Sentinel (Virbac)

Generic Name:

Milbemycin Oxime (mil-beh-my-sin ox-eem) and Lufenuron (lew-fen-your-on)

What is the most important information I should know about Sentinel?

Sentinel is a prescription medication FDA-approved for use in dogs. Sentinel is available as artificial beef flavored (derived from pork and soy protein) chewable tablets. This medication should be given once a month year-round.

What should I discuss with my veterinarian before giving Sentinel to my pet?

Tell your veterinarian if your pet has ever had an allergic reaction to the medication.

How should Sentinel be given?

Give Sentinel exactly as directed by your veterinarian. If you do not understand the directions ask your pharmacist or veterinarian to explain them to you. The usual dose of Sentinel for dogs 2 to 10 pounds is 1 Flavor Tab every month (Brown Box), 11 to 25 pounds is 1 Flavor Tab every month (Green Box), 26 to 50 pounds is 1 Flavor Tab every month (Yellow Box) and 51 to 100 pounds is 1 Flavor Tab every month (White Box). For dogs over 100 pounds give the appropriate combination of tablets. To ensure adequate absorption, always administer Sentinel to dogs immediately after or in conjunction with a normal meal. Heartworm testing should be performed prior to the start of prevention therapy. If your pet is off Sentinel for 6 months or less, re-start the medication and test after 6 months since microfilaria, that take 6 months to mature, will result in a positive test result. Store Sentinel in a dry place at controlled room temperature, between 59-77F (15-25 C). Do not remove the tablet from its wrapper until ready to give the medicine. Keep this medication away from children and pets. Consult your veterinarian for pregnant or lactating dogs.

What are the possible side effects of Sentinel?

Side effects of Sentinel are rare although some pets may exhibit vomiting, depression, drowsiness, itching, hives, loss of appetite, diarrhea, or seizures, hypersalivation, and weakness. If these or other symptoms develop contact your veterinarian.

What happens if I miss giving a dose of Sentinel?

If a dose is missed and a 30-day interval between dosing is exceeded, administer Sentinel immediately and resume the monthly dosing schedule. If Sentinel replaces daily diethylcarbamazine (DEC) for heartworm prevention, the first dose must be given within 30 days after the last dose of DEC.

What happens if I overdose my pet on Sentinel?

Contact your veterinarian immediately.

What should I avoid while giving Sentinel to my pet?

Because humans can contract hookworms and roundworms from pets, it is important to maintain good personal hygiene. It is also important to eliminate fleas on your pet and in the household.

What other drugs will affect Sentinel?

While Sentinel is safe to use in dogs at risk for MDRI-allele mutation (Australian Shepherds, Collies, Shelties, etc.), unless tested normal, caution is advised if your pet is also being given amiodarone (Cordarone), azole antifungals such as ketoconazole, carvedilol (Coreg), cyclosporine (Atopica), diltiazem (Cardizem), erythromycin (Ery-Tabs) or clarithromycin (Biaxin), quinidine, spironolactone (Aldactone), tamoxifen, and verapamil (Calan). Do not give Sentinel to your pet if already giving an alternate heartworm medication.

Sentinel Directions:

  • Give Sentinel Flavor Tabs once a month on the same day of each month year-round.
  • Sentinel Flavor Tabs is for use in dogs only. Do not give to cats.
  • Watch your dog closely following dosing to be sure the entire dose has been swallowed. If it is not completely swallowed, give one more full recommended dose as soon as possible.
  • To ensure adequate absorption, always administer Sentinel to dogs immediately after or in conjunction with a normal meal.
  • Sentinel has no effect on adult fleas, but controls flea populations by breaking the flea life cycle at the egg stage.
  • To speed control of flea infestation, products that kill adult fleas like Capstar Flea Treatment Tablets may be used temporarily with Sentinel depending on the severity of the infestation.
  • Treatment may begin at any time of the year.
  • It is important to treat all dogs in the household for fleas. Cats in the same household should be treated with approved products for heartworm prevention for cats.
Tip:

Do not remove Sentinel from its wrapper until ready to give to your pet.

Sentinel Dosage for Dogs/puppies: (4+ weeks of age, weighing 2+ lbs)

Dogs/puppies: (4+ weeks of age, weighing 2+ lbs)
WeightDosage
2-10 lbsGive 1 Flavor Tab every month (Brown Box)
11-25 lbsGive 1 Flavor Tab every month (Green Box)
26-50 lbsGive 1 Flavor Tab every month (Yellow Box)
51-100 lbsGive 1 Flavor Tab every month (White Box)
Over 100 lbsGive combination of Flavor Tabs based on weight
Sentinel Dosage for Cats:
Cats
Do not use!
Sentinel Dosage for Horses:
Horses
Do not use!

Storage:

Should be stored at room temperature between 59° and 77° F.

Sentinel for Dogs Ingredients:

Sentinel Brown for Dogs 2-10 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime2.3 mg
Lufenuron46 mg
Sentinel Green for Dogs 11-25 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime5.75 mg
Lufenuron115 mg
Sentinel Yellow for Dogs 26-50 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime11.5 mg
Lufenuron230 mg
Sentinel White for Dogs 51-100 lbs:
Active Ingredient (per tablet)Amount
Milbemycin Oxime23 mg
Lufenuron460 mg