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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:

760-603-2331
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Ionis Media Contact:

760-603-4679
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Ionis Medical Information Contact:

1-833-644-6647 (833-MI-IONIS)
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Ionis Patient Advocacy Contact:

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Ionis Data Privacy Contact:

760-603-2732
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General Inquiries:

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