Contact Us
Merck Corporate Headquarters
2000 Galloping Hill Road
Kenilworth, NJ 07033 U.S.A.
8:30 5:30 p.m., ET
Product Inquiries
For product information, please visit our products page.
To report an adverse experience with a specific Merck product, please call the Merck National Service Center at 1.800.444.2080. The Merck National Service Center is pleased to assist you Monday through Friday from 8 a.m. to 7 p.m. ET.
Adverse experiences and product-related emergencies can be reported at any time by dialing 1.800.444.2080.