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, Horses)
- 800-211-3573 Livestock & Aquaculture (Cattle, Swine, Dairy)
- 800-219-9286 Poultry
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 the telephone numbers for emergency support services if immediate assistance is needed.