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For questions or to request for information, please contact us.

Ionis Pharmaceuticals, Inc.

2855 Gazelle Court Carlsbad, CA 92010
Telephone: 760-931-9200
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    Confidential Reporting Helpline:

    For all inquiries, please visit this link.

    Adverse Event Reporting:

    To report an Adverse Event or safety concern with use of an Ionis product, please call (800) 491-2664. If you are experiencing a medical emergency, please dial emergency services such as 911 or 112. For any other assistance, please call our Corporate Headquarters: (760) 931-9200.

    Ionis Investor Contact:


    Ionis Media Contact:


    Ionis Medical Information Contact:

    1-833-644-6647 (833-MI-IONIS)

    Ionis Patient Advocacy Contact:

    Ionis Data Privacy Contact: