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Usually shipped in 1-3 business days.* Learn more
We'll collect your vet's information at checkout to verify the prescription.
Usually shipped in 1-3 business days.* Learn more
$30 max savings.
Sentinel Flavor Tabs are administered monthly to prevent heartworm disease, control and prevent fleas, control adult hookworm, and control and remove adult roundworm and whipworm. It is appropriate for puppies and dogs aged four weeks or older and weighing 2 lbs or higher. See the Allivet Heartworm Comparison chart to find which heartworm prevention is best for your pet.
Sentinel heartworm prevention kills any immature heartworms your dogs may have been exposed to during the preceding month. It also treats intestinal infections of adult roundworms and hookworms. It does not kill adult fleas but does keep flea eggs from maturing to adulthood.
Formulated with a flavorful taste that most dogs like, Sentinel flavor tabs can be given as a treat and most dogs will easily accept the active ingredients. However, you can also offer them with food in the same way you would other tablets or pills. Whenever you administer Sentinel flavor tabs, your dog should also eat a full meal. Closely watch your dog to be sure they consume the entire dose. If they do not consume all of the dosage, give them another full recommended dose as soon as you can. Sentinel heartworm prevention should always be given with or immediately after a full meal to make sure it is fully absorbed by your dog and provide maximum protection.
The following side effects have been reported:
Sentinel® does not have any known reaction with other drugs at this time.
Studies have indicated that collies, sheepdogs, and other herding dog breeds that have a genetic mutation known as MDR1 may be more sensitive to elevated levels of milbemycin and more likely to have serious adverse reactions including coma and death. These adverse reactions are associated with high quantities of milbemycin. Discuss any concerns you have with your veterinarian. Some forms of milbemycin that contain pork extracts for flavor may cause a food allergy in some pets.
Your pet should be tested for heartworms before using Sentinel heartworm preventive, as pets with high levels of heartworms in their system sometimes react to milbemycin. Discuss the use of Sentinel for pregnant or lactating dogs with your veterinarian.
Before starting Sentinel flavor tabs, speak with your veterinarian about any other drugs your dog is taking, including vitamins and supplements. In addition, notify your veterinarian of any allergies or reactions they may have had to other medications. They will be able to answer all your questions about how Sentinel works, any possible adverse reactions, and any side effects to watch out for.
Intestinal parasites like roundworms and hookworms can be spread from pets to people. Discuss with your veterinarian additional measures you can take to help keep your pet from picking up intestinal worms, and how to protect your family and yourself.
My oldest dog has been on these tablets her whole life. We appreciate they way they keep her healthy
I’ve been using this heart worm tablet for many years with all my dogs. Never had a problem due to giving it to them every month.
My German Shepard, Bella, has been taking Sentinel Heartworm Tablets for several years. She readily chews the tablet when I offer it to her, and she has had no issues with heartworms.
My dog loved it , never had any issue with heartworm , he is using it since he was 6months old, he is 7yrs. old now , very healthy dog.
I have been using Sentinel Heartwork Flavor Tablets for Dogs (oral tabs) for many years. I buy them from Allivet. I am very pleased with both the product and the service I received from Allivet.
I’ve had no problems and the dogs tolerate this medication very well. I am a breeder, and I trust Sentinel based on repro vets’ recommendations. Fast delivery, as well, and excellent customer service!
Works well. My dog never has had any reactions to this drug. He has also never gotten fleas or worms since taking this combo pill.
Piper is very picky when it comes to ingesting anything. Sentinel tablets are very small and easily disguised in a small piece of cheese.
My dog loves these chewable tablets! I just put one in with his food once a month and he eats it right up! In many years of using these tablets I've never had one flea and we are in a vacant lot with grass every day.
My dogs loves Sentinel. They take them like a treat. No forcing or hiding pill in something. Highly recommended this product.
I have been using Sentinel for my dogs for years. What attracted me to use it for my dogs is that does two jobs with one montly pill. Sentinel is an antiparasite product AND dewormer. It control flea eggs and larvae, which prevents a flea population explosion later. More importantly Sentinel also kills heartworm larvae, which means it protects against eartworm infection. In addition, it gets rid of some other intestinal worms such as roundworms, whipworms, and hookworms. We live in North Idaho and have deer traipsing daily through our yard. They leave behind their droppings and probably ticks, but my dogs have never gotten ticks or fleas since being on this product. And, because my beagle likes to eat deer droppings, I feel confident that she is protected against most other worms found in their stool.
Has worked well with all my dogs for years. No heartworms or fleas.
these work the best for our pet. he loves them and it comes in 6 month to 12 month option
Great price! It's small so my dog takes it easily!
All my vet supplies right at my finger tip! Great service and quality products.
We have always used Sentinel for both of our pups & never had any issues. Also Allivet's Autoship program makes it fast & effortless to get the medication when we need it & they even contact the vet for you to get the prescription.
We are using sentinel for many years. Never had problems with it. Allivet has great customer service and fast delivery
I have give this medication to my dear Max our Golden Retriever and 6 years and he is healthy and always pass his blood test free of warms. Also the convenience of the system that
Allivet always has the best price and speedy delivery...I would certainly recommend! I recently ordered 2 brown packs (1 year total supply) of the Sentinel when Allivet e-mailed me a great coupon code....delivered so quickly after they verified my veterinarian's approval for this Rx. I have always given my 6-yr old, 8.5-lb fur-baby this Sentinel each month since she was a puppy, as recommended by my vet....I just hide it in a ball of chunky PB for dogs (peanuts only - no sugar, salt, xylitol, etc.), which she loves to scarf down, and she has always been in great health (negative heartworm tests & no fleas ever)!
Very happy with Sentinel for our dogs. We've used this for years (dogs are 10 yrs and 7 yrs). The product has been wonderful and Allivet always ships it quickly, working with our vet when we need a refill on the prescription. Thanks for helping us take good care of our dogs' health!
It works great for my dog
This always works for my dogs
My dogs have been on Sentinel monthly for almost two years and now suddenly we have a flea infestation. All were just checked for heartworms and that was negative so it obviously works for heartworms but fleas.
GREAT PRICE - COULDN'T FIND ANYONE ELSE LOWER
I like that it covers heartworm and offers some flea protection
Works well so we stick with it for over 9 years with our Chiweenie.
Heartworm, flea, and tick prevention
Have used this product for years. Allivet is wonderful and very easy to use.
My dog has been using it for the last 16 years and it seems to work well and she feels good using it.
My Cocker is often out on a golf course where I've seen opossums, racoons and bears. I haven't had any worm problem in the 3 years here.
Best price, took coupons too
This is the best deal online
the best product my vet recommends to prevent heartworm
I use Allivet for both prescriptions for our dog. I am on automatic refill and it works wonderfully. Been using this company for several years. Great!
reasonably price, quick service, never had issue that was not resolved promptly
Have used Sentinel for all my collies and never had a problem with heart worm or any negative reaction or side effects. I trust this medication for my collies
Vet recommended and your price is better than vet.
My pet is been taken sentinel for several years. I've been happy with results of this med.
Perfect for my pups. Been staying very healthy. Prices are great.
Works pretty well.
My dog likes the taste of these and willingly eats them. She would not eat another product we tried.
My dog has been taking Sentinel Heart Worm meds for 6 1/2 years and has never had any bad reactions. His only problem is that he refuses to eat a hard pill, so I put peanut butter on it and the pill and he takes it without ay problems. On my latest order, the Post Office somehow lost my order. Upon contacting Allivet and informing them about the problem, they sent me a free replacement order after checking the tracking details. This was unexpected and shows that not only did I get the best product price, but I also choose the best company to fill my order.
Always get good and immediate service
It has all the protection my puppy need to keep him healthy
Best prices and quick shipping
Took awhile, but no fleas on my property. Works great for the wild cats outside. Put in wet cat food for them. Really cured the flea problem. Works on my dogs.
Excellent service always!
Great double product it controls fleas and prevents heartworms.
Works great!
Great price
better pricing than at the vet's office
Loves it
It works and no oily residue on my dog.
Safe and effective
I have been using it for years, really protects my fur baby's
This works pretty good.
Works!
Excellent product-no fleas in my house!
Its a shame, I tried Sentinel because I listened to all the good reviews and the great price. Sentinel does not work. My maltipoo mix was itching nonstop even on this pill. I'd find fleas on him often. I got my home exterminated but my dog gets new ones that jump on him while on his walks. I purchased a year's supply and I have already decided to switch after 5 months. My poor baby didn't get any break from those fleas while on Sentinel.
Quick service, good prices.
Have been using SENTINEL, for more than 20 years, no issues.
Great value
Allivet is great with my orders and is always on time and great for my dogs too. Also provides great prices.
Easy! Price could be lower for comparison
I've used this before and it works well!
best ever product but the price is not good it has gone up $30 more from last yr that is a big just
Top quality, great customer service, lowest price, quick delivery. What's not to like.
Best flea med with heart worm protection plus it's chewable. Dogs actually eat it!
Great company
Works well
Fast and secure way of purchasing your pet supplies.
best price, easy to use service!
Easy, friendly website
Cheaper than buying at the Vet
Has worked for 15 years for my K C
Cheaper than vet prices and free shipping.
Nice service
Best price online!!
Cheaper than any place else.
It is effective and no side effects
makes things easer
Excellent price
Love this! It's affordable and convenient!
The price was much more affordable, ordering was simple, shipping was on time and I am very pleased with the customer service.
It really works
Cheaper than HeartGuard plus adds flea and tick protection.
Easy to place order and wili have it shipped to home.
I chose sentinel because it is easy to administer
Love this product
saved a huge amout of money
I love that it covers heartworms, fleas, and intestinal worms
Less expensive than from my vet
I know there are lots of newer options and some even have tick prevention. I stick with Sentinel because not only does it work-it causes no discernable side affects. That has not been the case with other products tried in the past. Added bonus is its less expensive than other products. I get my dogs the lyme disease vaccine so I'm not concerned that it doesn' t protect against ticks.
Works for my pets
it works
perfect for my little dog Fiona
free shipping
It is a product we've used, for our dog, in the past. It works in keeping her healthy so why change?
Has worked well for our pet. Will continue to use....
Sentinel 11 - 25 lbs 12 Month Supply Green