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Portable acute treatment designed for people with HAE in mind

Here you will find important information about FIRAZYR, a medicine used to treat acute attacks of hereditary angioedema (HAE) in adults 18 years of age and older. FIRAZYR is the first FDA-approved injection you give yourself under the skin (subcutaneously) to treat acute attacks of HAE—both in and out of the home—after you have been trained by a healthcare professional.


Treat HAE attacks both in and out of the home with FIRAZYR, a portable acute therapy that can go wherever you go

See how FIRAZYR is a proven treatment »

How to Use FIRAZYR

Get step-by-step instructions for using FIRAZYR to treat acute HAE attacks upon recognition of symptoms.

Learn how to use FIRAZYR »

When to Use FIRAZYR

Find out why treatment experts agree it's important to treat your HAE attacks as soon as symptoms appear.

See why to use FIRAZYR at first sign of an attack »


FIRAZYR works by blocking bradykinin from binding to B2 receptors, which reduces the activity of bradykinin and thereby treats the symptoms of acute attacks of HAE.

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Potential FIRAZYR Side Effects

Learn the most common side effects associated with FIRAZYR treatment.

Review side effects »

FIRAZYR Frequently Asked Questions

Get answers to common questions about FIRAZYR treatment.

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Treat HAE Attacks

Learn the importance of treating an acute HAE attack.

Understand attacks »

OnePath® Support

Product support from a dedicated Patient Support Manager.

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