Contact Us

At Amphastar Pharmaceuticals, we welcome your questions, comments and requests.

Dan Dischner
V.P. of Corporate Communications

General Corporate Inquiry
Amphastar Pharmaceuticals, Inc.
11570 6th Street
Rancho Cucamonga, CA 91730

Customer Service
1-800-423-4136 (Option 2)

Drug Safety/Medical Information
To report adverse events or product complaints, or for medical information inquiries, please call:
1-800-423-4136 (Option 2)


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