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All the latest deals, news and more > Pet Pharmacy > Flea & Tick > Item # 406378

Sentinel Spectrum Chewables 6-ct

Prescription Required

Eligible for free e-certification with purchase


In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.



In Stock. Usually Ships 3-6 business days.

Shipping weight = 1.00 lb.


Sometimes, manufacturers require that products be advertised only at their suggested prices. When we choose to sell these items for less, we display the sale price only in the cart. To see the price, click Add to Cart.


All medications are filled by VetSource Pharmacy. More information. Can only be shipped to the 50 US states.

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Product Summary:

 Sentinel Spectrum Chewables 6 count
Sentinel Spectrum is a once-a-month chewable tablet that contains a combination of milbeycin oxime, praziquantel, and lufenuron to prevent  and control fleas, heartworm and intestinal worms in dogs. Milbemycin oxime interferes with nerve transmission and helps protect against heartworm, roundworm, hookworm, and whipworm. Praziquantel causes muscle spasms and kills tapeworms. Lufenuron is  an insect growth regulator, which is used to control fleas by preventing the development of flea eggs.
Sentinel Spectrum is a highly palatable beef-flavored chewable tablet that provides broad spectrum parasite protection.
For use:
Dogs (at least 6 weeks of age and weighing at least 2 lbs)
Xsmall (Orange) for dogs 2 to 8 lbs
Small (Green) for dogs 8.1 to 25 lbs
Medium (Yellow) for dogs 25.1 to 50 lbs
Large (Blue) for dogs 50.1 to 100 lbs
Active Ingredient(s):
milbeycin oxime, lufenuron & praziquantel
Dogs should be tested for adult heartworms and treated if necessary before starting Sentinel Spectrum.   This product does not treat adult heartworms and can cause a shock-like reaction in  heartworm positive dogs. Do not use on dogs under 6 weeks of age and weighing under 2 lbs. The safety of Sentinel Spectrum has not been evaluated in nursing females. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together. 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.
Side effects:
Side effects may include vomiting, depression/lethargy, itching, hives, diarrhea, loss of appetite, clogged pores, loss of muscle coordination, rapid and uncontrollable shaking, salivation, and weakness.  Notify your veterinarian if side effects appear and remain troublesome. Other side effects may occur, if you notice anything unusual, contact your veterinarian.
Give either during or immediately after the consumption of a meal and ensure that the entire dose is consumed by your pet. May be given directly or broken into smaller pieces and mixed with food.
Virbac acquired Sentinel Flavor Tabs and Sentinel Spectrum products, previously manufactured and marketed in the United States by Novartis Animal Health.  During the transitional period, the manufacturer may still be listed as "Novartis" on product packaging.
Please note:

We are not a licensed pharmacy.


This prescription product or therapeutic food is fulfilled by VetSource, a licensed pharmacy in all 50 US states.  VetSource only ships to the 50 US states. 


To order prescription products or therapeutic foods  from VetSource you must have an existing, valid veterinarian-client-patient relationship.  Prescription requests are subject to a Drug Utilization Review by a licensed pharmacist at VetSource for patient safety.


All prescription products (excluding therapeutic food) are FDA approved, or EPA licensed, to be sold in the US.


Prescription products cannot be returned. 

Downloadable Resources
Patient Information SheetPatient Information Sheet

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