Contact Us
For more information on Pinkeye Protection for Cattle, contact your local
Merck Animal Health Representative, call Customer Service at 1-800-521-5767 or
Large Animal Business Unit Technical Services at 1-800-211-3573, or visit

To report an adverse reaction, product-related problem, or human exposure, please call Merck Animal Health Technical Services:

  • Companion Animal (Dogs, Cats, Horses) 800-224-5318
  • Livestock & Aquaculture (Cattle, Swine, Dairy) 800-211-3573
  • Poultry 800-219-9286

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.

Postal Address
Merck Animal Health
10488 S 136th St
Omaha, NE 68138

If you need more information on Pinkeye or have a question about any of our products, click here.