For US Healthcare Professionals
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Customer Service > Site Technical Support
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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.
OR
Call Us Directly
Technical experts are available to answer your questions Monday–Friday from 8:00 AM–7:00 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.
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All product names listed on this site are registered trademarks owned by or licensed to a subsidiary of Merck & Co., Inc.
MerckProductServices, MerckServices, MerckSource, Merck OnCall, MerckMedicus, and MerckEngage are trademarks or registered trademarks of Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc.
COZAAR and HYZAAR are registered trademarks of E.I. du Pont de Nemours and Company, Wilmington, Delaware, USA
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