Looking To Get in Touch With Horizon?

Find the best way to reach us from the options below.

Contact Our Teams 

Please visit our Patient Support page if you are a patient or caregiver looking for more information about Horizon's patient support program, Horizon By Your Side. This program is available for eligible U.S residents only.

To request medical information, please call 1-866-479-6742 (Option 1).

If you are a U.S. health care professional looking for medical information, please visit our Medical Resources page. If you are located outside the U.S., please visit our other country-specific websites for relevant contact information.

In the U.S., to report an adverse event/side effect or quality complaint related to any Horizon medicine, please call 1-866-479-6742 (Option 1). If you are located outside the U.S., please visit our other country-specific websites for relevant contact information.

If you would like to submit partnering inquiries, please contact us at bd@horizontherapeutics.com.

To connect with our investor relations team, please contact us at Investor-relations@horizontherapeutics.com.

To connect with our corporate social responsibility team, please contact us at csr@horizontherapeutics.com.

To submit an inquiry or report a concern please connect with our Ethics & Compliance and Privacy team at privacy@horizontherapeutics.com.

Questions regarding the medical education grant submission process can be sent to medicaleducation@horizontherapeutics.com, and questions regarding the external research grant submission process can be sent to externalresearch@horizontherapeutics.com.

For U.S. media inquiries, contact media@horizontherapeutics.com. For EU media inquiries, contact ray@gordonmrm.ie.

Offices Around the Globe



W22F Shibuya Mark City
1-12-1 Dogenzaka
Shibuya-ku, Tokyo
150-0043 Japan
Office 141-142

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Dublin — Global HQ

Dublin — Global Headquarters

70 St. Stephen’s Green
Saint Kevin's, Dublin 2

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IDA Business & Technology Park, Butlerstown
Waterford X91 PPN4

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Via Tiziano 32
3rd floor, Office 320
Milan, Italy 20145

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Baarerstrasse 14-16
2nd floor, Office 215 & 216
Zug, Switzerland 6300

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United States


South San Francisco

Two Tower Place
12th Floor
South San Francisco, CA 94080
United States

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District of Columbia

Washington, D.C. 

505 9th Street NW
Suite 600
Washington, D.C. 20004
United States

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Deerfield — U.S. HQ

Deerfield — U.S. Headquarters

1 Horizon Way
Deerfield, IL 60015
United States

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10 South Wacker Drive
Suite 2550
Chicago, IL 60606
United States

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2400 Research Blvd
Rockville, MD 20850
United States

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Sao Paulo

Av. Dra. Ruth Cardoso
12th floor
8501 - Pinheiros
Office 1713, 1715 & 1730
Sao Paulo - SP, 05425-070

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Call or Email Us

In the United States, if this is a medical emergency, please call 911 or visit your nearest emergency room center.

For any other inquiries, please call
1-866-479-6742 (Option 2).

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