Sentinel Spectrum Chews for Dogs

Sentinel Spectrum Chews (milbemycin oxime + lufenuron + praziquantel) Heartworm and Flea Prevention is used to prevent heartworm disease and flea populations, and to treat tapeworm, hookworm, roundworm, and whipworm infections in dogs and puppies. Sentinel Spectrum Chews contain milbemycin oxime, lufenuron, and praziquantel in a palatable formula given once per month. Approved for dogs and puppies at least 2 lbs. and 6 weeks of age.

* milbemycin oxime + lufenuron + praziquantel
* prevention of heartworm disease
* prevents & controls flea populations
* treats & controls tapeworms, whipworms, roundworms & hookworms
* once a month
* beef & bacon flavored chew


Each Sentinel Spectrum Chew for Dogs 2-8 lbs. (Orange) contains 2.3 mg milbemycin oxime, 46 mg lufenuron, and 22.8 mg praziquantel.
Each Sentinel Spectrum Chew for Dogs 8.1-25 lbs. (Green) contains 5.75 mg milbemycin oxime, 115 mg lufenuron, and 57 mg praziquantel.
Each Sentinel Spectrum Chew for Dogs 25.1-50 lbs. (Yellow) contains 11.5 mg milbemycin oxime, 230 mg lufenuron, and 114 mg praziquantel.
Each Sentinel Spectrum Chew for Dogs 50.1-100 lbs. (Blue) contains 23.0 mg milbemycin oxime, 460 mg lufenuron, and 228 mg praziquantel.

• How to Order Prescription Medications
• Veterinarian Information

Please note that this item requires a veterinarian's prescription.

Three convenient ways to do that are:

1. Let us contact your veterinarian for prescription authorization.
2. Your veterinarian can contact us by fax/phone.
3. You can mail us the original written prescription.

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• Label Information
• Dog Heartworm Prevention Products Comparison Chart
• How to Dispose of Unused Medicines
• Other products by Merck