Contact Us
Content last modified Feb 2019
Contact the Merck Vet Manual Staff
We welcome your feedback. When contacting us, please include the country where you currently reside.
Adverse Event Reporting
To report an adverse reaction, product-related problem, or human exposure, please call Merck Animal Health Technical Services:
800-224-5318 Companion Animal (Dogs, Cats)
800-211-3573 Livestock (Cattle, Swine, Poultry & Aquaculture)
866-349-3497 Equine (Horses)
888-466-3242 HomeAgain
Normal business hours are 8:30 am to 5:00 pm EST.
For after-hours emergencies, please call the numbers shown above. A recorded message will provide telephone numbers for emergency support services if immediate assistance is needed.