For US Healthcare Professionals
Sign In
User name    (Forgotten?)

Password     (Forgotten?)


 Remember me

You can use your MerckMedicus™ user name and password.

Need to Register?
Prescribing Information for All Merck Products
Viewing files designated with requires a PDF reader
Opening files designated with requires a Zip reader

Customer Service

E-mail Your Technical Question or Comment

You may fill in the form below and submit it at any time. You will receive a response within 24 hours of the next business day.

Medical and product-related questions must be submitted through My Product Questions & Answers.

All fields are required.

  • Characters remaining:

OR

Call Us Directly

Technical experts are available to answer your questions Monday–Friday from 8:00 AM–11:00 PM ET.

Please call us at:

1-800-489-5119

You are welcome to leave a voicemail message after business hours. Your call will be returned on the next business day.

Adverse Event Reporting

If this is an emergency or you wish to report an adverse event with a specific Merck product, please call the Merck National Service Center at any time at:
1-866-342-5683

COZAAR and HYZAAR are registered trademarks of E.I. du Pont de Nemours and Company, Wilmington, Delaware, USA
FOSAMAX PLUS D is a trademark of Merck & Co., Inc.
VYTORIN and ZETIA are registered trademarks of MSP Singapore Company, LLC. View the Merck/Schering-Plough privacy policy.
All other brand names are registered trademarks of Merck & Co., Inc.
MerckServices and MerckSource are registered trademarks of Merck & Co., Inc.
MerckProductServices and MerckMedicus are trademarks of Merck & Co., Inc.

20752836(1)-11/07-EBS-PHY