Contact Us

If you have a question about a medical condition, consult with a healthcare professional or, in the case of an emergency, call 911 immediately.
You can contact us by phone, fax, or email.

Consumer Affairs
Phone: 1-888-508-6978
Fax: 610-290-9729
Email: cslb-consumeraffairs@cslbehring.com

(Standard business hours are 9:00 am – 5:00 pm ET)

Medical Information
Phone: 1-800-504-5434 
Fax: 610-878-4550
Email: medinfona@cslbehring.com

(Standard business hours are 9:00 am – 5:00 pm ET)

If you experience any undesirable side effect(s) with a CSL Behring product, talk to your doctor, pharmacist, or nurse. If you would like to report the side effect(s) to CSL Behring, please contact us at:

CSL Behring US Pharmacovigilance
Phone: 1-866-915-6958
Email: Adverse.Events.Global@cslbehring.com
(Available 24 hrs/day)

You are also encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.

Corporate Media Inquiries
Tom Hushen
Phone: 1-267-769-6728 

(Standard business hours are 8:30 am – 5:00 pm ET)

Visit the CSL Plasma website to get more information on donating plasma or to send your questions and comments.

CSL Behring Headquarters, North America
Phone: 1-610-878-4000
Fax: 610-878-4009

Address:
PO Box 61501
1020 First Avenue
King of Prussia, PA 19406-0901 USA
(Standard business hours are 8:30 am – 5:00 pm ET)

Powerful Prophylaxis

Fast and sustained protection you can rely on

Personalized Support

One-on-one support throughout your ANDEMBRY journey

Simple dosing

Once-monthly dosing from Day 1 for all patients 12 years and older

Innovation in Action

Only ANDEMBRY, a monoclonal antibody, 
inhibits FXIIa at the top of the HAE pathway

Safety Information

Important Safety Information