Contact Us

If you are a patient and your question is about a medical condition, then you should consult with a healthcare professional or, in the case of an emergency, call 911 immediately.

Standard business hours for CSL Behring are 8:30 AM to 5:00 PM eastern time.

CSL Behring Headquarters
Phone:	610-878-4000
Fax:	610-878-4009
Location:	North America Headquarters
Address:	P.O. Box 61501 1020 First Avenue King of Prussia, PA 19406 USA

Consumer Affairs
For Consumer Information
Phone:	888-508-6978
Fax:	610-878-4008

Medical Affairs
Phone:	800-504-5434
Fax:	610-878-4007

Adverse Events
To Report an Adverse Event
Phone:	610-878-4193
Phone:	866-915-6958 (24-hour toll free number)

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