MERCK Animal Health

Sentinel® Flavor Tabs®

MERCK Animal Health
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$13.99 - $89.99
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Sentinel® Flavor Tabs® for Dogs
Product Information
Sentinel® Flavor Tabs® are a chewable, beef-flavored tablet administered once a month to protect your dog from the threat of potentially deadly heartworm disease, for prevention and control of flea populations, and it also controls and treats against roundworms and hookworms and whipworms in dogs when given every month.
Dogs six months of age and older should be tested for heartworm disease prior to being put on a preventive program and tested annually thereafter.
Dogs (at least 4 weeks of age, weighing more than 2 lbs)
Generic Name
Milbemycin oxime, Lufenuron
Brand Names
Sentinel® Flavor Tabs®
Drug Class
Parasiticide, Chitin Synthesis Inhibitor, Insect Growth Regulator
Product Flavoring
Sentinel® Flavor Tabs® is a artificial beef flavored chewable.
*Contains pork, soy, and lactose.
Product Description & Form
Sentinel® Flavor Tabs® Dogs 2-10 lbs: 7 mm, pentagon (5 sided), no score, brown tablet, imprinted with I. (NDC 00061-5350-01)
Sentinel® Flavor Tabs® Dogs 11-25 lbs: 10 mm, pentagon (5 sided), no score, brown tablet, imprinted with L. (NDC 00061-5351-01)
Sentinel® Flavor Tabs® Dogs 26-50 lbs: 12 mm, pentagon (5 sided), no score, brown tablet, imprinted with T. (NDC 00061-5352-01)
Sentinel® Flavor Tabs® Dogs 51-100 lbs: 16 mm, pentagon (5 sided), no score, brown tablet, imprinted with C. (NDC 00061-5353-01)
  • Once a month beef flavored chewable tablet that is highly palatable
  • When given at the recommended dose and regimen, Sentinel® Flavor Tabs® is effective against the tissue larval stage of heartworm larvae for a month after infection resulting in the prevention of adult heartworms
  • Treats and controls roundworms (T. canis, T. leonina) and hookworms (A. caninum) and whipworm (T. vulpis) in dogs once monthly when given routinely
  • Controls the flea populations by preventing the development of flea eggs and does not kill adult fleas. Concurrent use of an adulticide product may be necessary for adequate control of adult fleas.
  • Approved for dogs 4+ weeks of age, weighing more than 2 lbs
Active Ingredients
Milbemycin oxime, Lufenuron
Inactive Ingredients
Lactose monohydrate, microcrystalline cellulose 102, corn starch, croscarmellose sodium, magnesium stearate. 
Sentinel® Flavor Tabs® should be given orally as directed by your veterinarian. This medication should be administered at monthly (every 30 day) intervals, year-round to guarantee protection from heartworms, control of fleas, and to treat for roundworms, hookworms and whipworms. For dogs over 100 lbs, use the appropriate combination of these Tablets to ensure complete protection against heartworms.
Remove only 1 tablet at a time from the foil-backed blister card and return the card to the box to protect from light. Do not remove tablet from foil wrapper until you are ready to give it to your pet. Offer to the pet as a treat by hand or in a small amount of food. Give with a meal to ensure complete absorption. Make sure entire tablet is consumed.
Missed Doses
Give the dose as soon as you remember, unless it is time for the next dose. Do not double dose. If your pet has missed a dose please consult with your veterinarian as testing may be recommended sooner than usual.
Side Effects
Sentinel® Flavor Tabs® is generally well tolerated in dogs. There are very few side effects when the drug is given at the usual dose. The following side effects have been reported with the use of Sentinel® Flavor Tabs®: lethargy, vomiting, anorexia, diarrhea, ataxia, staggering, convulsions, and hypersalivation. If this occurs, notify your veterinarian.
Other side effects may occur. If you notice anything unusual, contact your veterinarian.
Drug & Food Interactions
The following drugs can potentially interact with Sentinel® Flavor Tabs®: cyclosporine, amiodarone, diltiazem, azole antifungals, and erythromycin. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.
Make sure to tell your veterinarian what other medication you are giving to your pet. Quite often your veterinarian may prescribe two different medications, and a drug interaction may be anticipated. In this case, your veterinarian may vary the dose and/or monitor your pet more closely.
Heartworm testing should be performed prior to the start of prevention therapy. If the animal is off Sentinel® Flavor Tabs® for 6 months or less, start the medication and test after 6 months since microfilaria, that take 6 months to mature, will result in a positive test result.
Allergic reactions to medications may occur. Be sure to inform VetSource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, call your veterinarian immediately or go to a veterinary emergency clinic. Symptoms may include but are not limited to: swollen lips, tongue, face, airways; difficulty breathing; agitation; profuse salivation; vomiting; widespread hives and itching.
Adverse Reaction
If you are concerned that your pet has experienced an adverse reaction to this medication, please contact the manufacturer Merck at 800-224-5318 or contact Vetsource customer service at 877-738-4443.
Store long term at 59°F to 77° F in controlled room temperature. Store in original packaging to protect from light. Keep out of reach of children and pets. Store in a childproof container. Store this medicine in a cool, dry place at room temperature. Store away from heat and direct sunlight. Do not store this medicine in the bathroom, near the kitchen sink or in damp places. The medicine may break down if exposed to heat or moisture.
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$13.99 - $89.99