Merck & Co., Inc. is a global research-driven pharmaceutical company dedicated to putting patients first.

Contact Information for US Patients & Caregivers

For Patient Programs

Patient Assistance Program
(800) 727-5400

 Prescription Discount Program 
(800) 506-3725
Vaccine Assistance Program
(800) 293-3881		  


To report an adverse experience with a specific Merck product, please call the Merck National Service Center at 800-444-2080


 

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