Contact us
Vaccines
Submit a question, comment, or suggestion
Use our online contact form to submit an inquiry related to a Merck vaccine.
You must be a registered user to utilize this feature.
Give us a call
Merck Vaccine Customer Center
- 8:00 AM and 7:00 PM ET
If calling from Canada, please call the Merck Canada Order Desk at 800.463.7251.
To offer suggestions about Merck’s vaccine business,
Callback service and Web conference
Use our Callback service if you would like to speak to, or begin a live Web conference with, a dedicated Vaccine Account Representative. This service is available between:
- 8:00 AM and 6:30 PM ET
You must be a registered user to utilize this feature.
Send us a fax
Please fax the Merck Vaccine Customer Center at
Send us mail
Pharmaceuticals or Specialty injectables
Give us a call
Merck Order Management Center
- 8:00 AM and 7:00 PM ET
If calling from Canada, please call the Merck Canada Order Desk at 800.463.7251.
Send us a fax
Please fax the Merck Order Management Center at
Send us mail
Adverse experience reporting
To report an Adverse Experience directly to Merck:
To report to the National Vaccine Adverse Event Reporting System (VAERS):
Medical information requests
Requests for medical information concerning Merck products can be submitted online or by telephone.
To request information online, click here.
To request by phone: The Merck National Service Center will be pleased to assist you
- 8:00 AM and 6:30 PM ET
For general feedback, please click here.