Lifted Logic Web Design in Kansas City clock check_box_outline_blank check check_box chevron-down chevron-left chevron-right chevron-up google plus pinterest radio_button_checked radio_button_unchecked twitter youtube arrow-up send phone play speaker location-solid facebook avatar down-arrow bag cart sheep stethoscope rabbit reptile dog cat bird heart basket-grocery rx location instagram drug horse basket twitter next close right-arrow scroll

Sentinel® Flavor Tabs® for Dogs 11-25 lbs 6 Pack


SKU: 21181S Manufacturer: Merck

Prescription Required

SENTINEL FLAVOR TABS protect your dog from a wide range of parasites, including fleas and whipworms.

SENTINEL FLAVOR TABS (milbemycin oxime, lufenuron) provide protection against 5 different kinds of parasites. For the prevention of heartworm disease and also to control flea populations and adult hookworms, and remove and control adult roundworm and whipworm infections in dogs and puppies. Dogs love the taste, making administration easy and convenient.

Green Box: 6 Pack (6 month supply) for Dogs 11-25 lbs

Available only if a licensed veterinarian mails, faxes or calls in a prescription.

Not able to ship prescription items to Virginia.

Mailing address: UPCO, P.O. BOX 969, ST. JOSEPH, MO 64502



SENTINEL FLAVOR TABS are indicated for use in dogs and puppies, four weeks of age and older, and two pounds of body weight or greater. SENTINEL FLAVOR TABS are also indicated for the prevention of heartworm disease caused by Dirofilaria immitis, for the prevention and control of flea populations, the control of adult Ancylostoma caninum (hookworm), and the removal and control of adult Toxocara canis and Toxascaris leonina (roundworm) and Trichuris vulpis (whipworm) infections.

Lufenuron controls 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. Available by prescription only.

Frequently Asked Questions

  • How do I give my dog SENTINEL FLAVOR TABS (milbemycin oxime, lufenuron)?
    SENTINEL FLAVOR TABS are chewable tablets that are given by mouth along with a meal. Giving the product with a meal helps ensure full absorption of the medicine.
  • How often do I give my dog SENTINEL FLAVOR TABS (milbemycin oxime, lufenuron)?
    For optimal protection against 5 kinds of parasites, including flea populations and heartworms, you should administer SENTINEL FLAVOR TABS every 30 days.


There are no reviews yet.

Be the first to review “Sentinel® Flavor Tabs® for Dogs 11-25 lbs 6 Pack”

Your email address will not be published. Required fields are marked *

Ingredients / Material How to Use
  • Milbemycin Oxime …………… 2.3 mg

    Lufenuron ……………………….. 46 mg

SENTINEL FLAVOR TABS are given orally, once a month, at the recommended minimum dosage of 0.23 mg/lb (0.5 mg/kg) milbemycin oxime and 4.55 mg/lb (10 mg/kg) lufenuron. Dogs over 100 lbs are provided the appropriate combination of tablets.

Recommended Dosage Schedule

Body Weight Milbemycin Oxime Per Tablet Lufenuron Per Tablet
2 to 10 lbs. 2.3 mg 46 mg
11 to 25 lbs. 5.75 mg 115 mg
26 to 50 lbs. 11.5 mg 230 mg
51 to 100 lbs. 23 mg 460 mg
To ensure adequate absorption, always administer SENTINEL FLAVOR TABS to dogs immediately after or in conjunction with a normal meal.

We’re here to help

Not sure what your pet needs? Don’t see your brand? Contact us.

After 3 generations, we know a thing or two about animal care and we’re always a phone call away.