Contact Medical Affairs

We aim to ensure that health care providers have the information they need. To reach out to our team directly, use the contact method below that is most convenient for you.

For medical information requests, you can call 1-866-479-6742 (Option 1), email or submit an inquiry below.

Please note that Horizon is required to comply with the “Sunshine Act.” As other pharmaceutical manufacturers, Horizon will track and report all transfers of value to physicians licensed to practice in the U.S. This will include, but is not limited to, all food and beverage, honoraria, consulting fees, educational materials, research and other resources. As required, this information will be reported to the Centers for Medicare & Medicaid Services (CMS) by physician National Provider Identifier (NPI) number.

To report an adverse event or side effect, please call 1-866-479-6742 (Option 1) or contact the U.S. FDA directly by visiting or calling 1-800-FDA-1088.

To report a quality issue or complaint related to any Horizon medicine, please call 1-866-479-6742 (Option 1).

Questions regarding the external research grant or medical education grant submission process can be sent to or, respectively.

Our Portfolio

Helping patients live healthier lives

Discover More