• 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

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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])
Proven symptom reduction for your HAE attacks.

Proven symptom reduction for your HAE attacks

In clinical trials, people treated with KALBITOR showed significant improvement in hereditary angloedema (HAE) attack symptoms at 4 hours.

LEARN MORE ABOUT KALBITOR ›

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

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Takeda Patient Support

Let us help you along your treatment journey with KALBITOR. Takeda Patient Support provides product support services for people prescribed KALBITOR per the approved indication.

LEARN MORE ABOUT TAKEDA PATIENT SUPPORT ›

Woman painting. Learn more about treating HAE attacks with KALBITOR.

Treating HAE Attacks with KALBITOR

KALBITOR is injected under the skin (subcutaneously) by your doctor or nurse to help treat hereditary angioedema (HAE) attacks.

LEARN MORE ABOUT HOW KALBITOR WORKS ›

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

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How KALBITOR Works

Learn more about how KALBITOR works by inhibiting a protein in your body called plasma kallikrein.

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Patient Support

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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.

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