100% Satisfaction Guaranteed

Free Shipping Over $49.00


Mon-Fri 9am-5pm Pacific


Description & Usage

Sentinel Spectrum is a once a month beef-flavored chewable used for the prevention of heartworm disease as well as the prevention and control of fleas and flea infestations. Sentinel Spectrum also protects your pet from various worms such as: hookworm, roundworm, whipworm, and also acts as a dewormer for roundworm and whipworm. 

Precautions & Side Effects

Some side-effects have been reported, although they usually remain mild and temporary, you should to contact your veterinarian if your dog experiences vomiting, lethargy, diarrhea, seizures and muscle weakness, heavy breathing/panting and hypersalivation. Do not use in puppies under 6 weeks old or weighing less than 2 pounds. 

Milbemycin Oxime: 23 mg | Lufenuron: 460 mg |  Praziquantel: 228 mg


Sentinel Spectrum is administered by mouth, once every month. It is best to put your dog on a monthly schedule and give the flavored chew on the same day, every month for the entire year. It is recommended to give Sentinel Spectrum during or after meal time. Make sure the entire chew is swallowed. Do not give Sentinel Spectrum to cats.


Store at room temperatures in a dry environment. Keep away from pets and children. 


What is the difference between Sentinel and Sentinel Spectrum?

Not all parasiticides are created equal. Sentinel Flavor Tabs provides protection against fleas, heartworms, roundworms, hookworms and whipworms while Sentinel Spectrum provides a more "full spectrum" coverage with added protection against tapeworms. Sentinel Spectrum is also a beef-flavored chew, making it easy to administer and loved by all dogs. 

Can I give Sentinel Spectrum to my pet if it is already on a monthly Heartworm preventative?

No, you should not combine Sentinel Spectrum with any other alternate Heartworm medication. Consult your veterinarian to see if Sentinel Spectrum is right for your pet.

Can other drugs interact with Sentinel Spectrum?

Sentinel Spectrum is safe to use with most drugs but be cautious if your pet is already taking amiodarone (Cordarone), antifungals ("azole" drugs), carvedilol (Coreg), cyclosporine (Atopica), diltiazem (Cardizem), erythromycin or clarithromycin , quinidine, spironolactone (Aldactone), tamoxifen, and verapamil (Calan).