• Prescribing Information
  • Formularios en Español
  • Medication Guide
  • For Healthcare Professionals
  • Other Treatment Options
  • Important Safety Information
  • Prescribing Information
  • Medication Guide

KALBITOR® is a prescription medicine used to treat sudden attacks of hereditary angioedema (HAE) in people 12 years of age and older. KALBITOR is not a cure for HAE.

Important Safety Information

Serious allergic reactions may happen in some people who receive KALBITOR. These allergic reactions can be life-threatening and usually happen within 1 hour after receiving KALBITOR. Tell your doctor or nurse right away if you have any of these symptoms of a serious allergic reaction during or after treatment with KALBITOR: wheezing, shortness of breath, cough, chest tightness, or trouble breathing; dizziness, fainting, fast or weak heartbeat, or feeling nervous; reddening of the face, itching, hives, or feeling warm; swelling of the throat or tongue, throat tightness, hoarse voice, or trouble swallowing; runny nose, nasal congestion, or sneezing.

See Full Important Safety Information Below

KALBITOR® (ecallantide) logo
  • About KALBITOR
    • How KALBITOR Works
    • Risks and Side Effects
    • Common Questions
    • Starting on KALBITOR
  • What is HAE?
    • About HAE
    • Symptoms and Diagnosis
  • KALBITOR Product Support
    • Getting Started with Patient Support
    • Co-Pay Assistance
  • Sign Up

Other Treatment Options

  • Takhzyro®(lanadelumab-flyo) injection
  • Firazyr®(icatibant injection)
  • cinryze®(C1 esterase inhibitor [human])
KALBITOR® (ecallantide) logo
  • About KALBITOR
    • How KALBITOR Works
    • Risks and Side Effects
    • Common Questions
    • Starting on KALBITOR
  • What is HAE?
    • About HAE
    • Symptoms and Diagnosis
  • KALBITOR Product Support
    • Getting Started with Patient Support
    • Co-Pay Assistance
  • Sign Up
  • Formularios en Español
  • For Healthcare Professionals
  • Other Treatment Options
    • Main Menu
    • Other Treatment Options
    • Takhzyro®(lanadelumab-flyo) injection
    • Firazyr®(icatibant injection)
    • cinryze®(C1 esterase inhibitor [human])

Site Map

  • About KALBITOR
    • How KALBITOR Works
    • Risks and Side Effects
    • Common Questions
    • Starting on KALBITOR
  • What is HAE?
    • About HAE
    • Symptoms and Diagnosis
  • KALBITOR Product Support
    • Getting Started with Patient Support
    • Co-Pay Assistance
  • Sign Up

Important Safety Information

What is the most important information I should know about KALBITOR?
Serious allergic reactions may happen in some people who receive KALBITOR. These allergic reactions can be life-threatening and usually happen within 1 hour after receiving KALBITOR.

  • KALBITOR should be given to you by a doctor or nurse in a healthcare setting where serious allergic reactions and hereditary angioedema (HAE) can be treated.
  • Symptoms of a serious allergic reaction to KALBITOR can be similar to the symptoms of HAE, the condition that you are being treated for. Your doctor or nurse should watch you for any signs of a serious allergic reaction after treatment with KALBITOR.
  • Tell your doctor or nurse right away if you have any of these symptoms of a serious allergic reaction during or after treatment with KALBITOR:
    • wheezing, shortness of breath, cough, chest tightness, or trouble breathing
    • dizziness, fainting, fast or weak heartbeat, or feeling nervous
    • reddening of the face, itching, hives, or feeling warm
    • swelling of the throat or tongue, throat tightness, hoarse voice, or trouble swallowing
    • runny nose, nasal congestion, or sneezing

Who should not receive KALBITOR?
Do not receive KALBITOR if you are allergic to KALBITOR. Before receiving KALBITOR, tell your doctor if you have ever had an allergic reaction to KALBITOR.

What else should I tell my doctor before I receive KALBITOR?
Tell your doctor if you are pregnant, plan to become pregnant, breast-feeding, or plan to breast-feed. It is not known if KALBITOR will harm your unborn baby or pass into your breast milk.

Tell your doctor about all the medicines you take, including prescriptions and over-the-counter medicines, vitamins, and herbal supplements.

What are the possible side effects?
Common side effects of KALBITOR include headache, nausea, diarrhea, fever, injection site reactions, such as redness, rash, swelling, itching, or bruising, and stuffy nose. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch, or call 1-800-FDA-1088.

Talk to your doctor for more information about your medical condition or treatment.

Please see the Full Prescribing Information, including Boxed Warning and Medication Guide.

Takeda Logo
  • For US Audiences
  • Takeda
  • Privacy Notice
  • Legal Notice
  • Contact Us
  • Site Map

© 2024 Takeda Pharmaceuticals U.S.A., Inc., 500 Kendall Street, Cambridge, MA 02142. 1-877-TAKEDA-7 (1-877-825-3327). All rights reserved. TAKEDA®, the TAKEDA Logo®, and the TAKEDA Patient Support Logo™ are registered trademarks of Takeda Pharmaceutical Company Limited. KALBITOR® and the KALBITOR Logo® are registered trademarks of Dyax Corp.
US-ECA-0075v3.0 11/24

You are about to leave KALBITOR.com.

Click Yes to continue. Or, if you'd like to keep browsing KALBITOR.com, click No.

You are about to leave KALBITOR.com.

Click Yes to continue. Or, if you'd like to keep browsing KALBITOR.com, click No.

Please note:

The information contained in this section of the site is intended for U.S. healthcare professionals only. Are you a healthcare professional?

Ready to explore HAE events?

Click "Yes" to leave KALBITOR.com and continue signing up for an event.
Or, if you'd like to keep browsing KALBITOR.com, click "No."