

A Spectrum Of Protection
Against Unseen Threats

Veterinary Professionals
Bring a spectrum of protection into your practice.

Pet Parents
Protect your dog with comprehensive coverage of Sentinel brand products.
To report an adverse reaction, product-related problem or human exposure,
please call Merck Animal Health Technical Services.
Companion Animal Technical Services: 1-800-224-5318
For information about Merck Animal Health products, call 1-800-521-5767.

For technical assistance or to report a suspected adverse drug reaction, contact Merck Animal Health at 1-800-224-5318.
This site is intended for veterinary professionals. Pet parents should read more about Sentinel here.
Important Safety Information:
SENTINEL SPECTRUM CHEWS: Dogs should be tested for heartworm prior to use. Mild hypersensitivity reactions have been noted in some dogs carrying a high number of circulating microfilariae. Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. For complete product information refer to the product insert.
SENTINEL FLAVOR TABS: Dogs should be tested for heartworm prior to use. Mild hypersensitivity reactions have been noted in some dogs carrying a high number of circulating microfilariae. Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. For complete product information refer to the product insert
References:
i. SENTINEL® SPECTRUM® CHEWS [prescribing information]. Madison, NJ: Merck Animal Health; 2020.
ii. SENTINEL® FLAVOR TABS® [prescribing information]. Madison, NJ: Merck Animal Health; 2020.