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Medication Guide


Read this Medication Guide before you start receiving KALBITOR (ecallantide injection) and before each treatment. There may be new information. This Medication Guide does not take the place of talking to your doctor about your medical condition or your treatment.

What is the most important information that I should know about KALBITOR (ecallantide injection) ?

Serious allergic reactions may happen in some people who receive KALBITOR (ecallantide injection) . These allergic reactions can be life-threatening and usually happen within 1 hour after receiving KALBITOR (ecallantide injection) .

  • KALBITOR (ecallantide injection) 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 (ecallantide injection) 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 (ecallantide injection) .
  • 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 (ecallantide injection) :

What is KALBITOR (ecallantide injection) ?

KALBITOR (ecallantide injection) is a prescription medicine used to treat sudden attacks of hereditary angioedema (HAE).

KALBITOR (ecallantide injection) is not a cure for HAE.

It is not known if KALBITOR (ecallantide injection) is safe and effective in children under 16 years of age.

Who should not receive KALBITOR (ecallantide injection) ?

Do not receive KALBITOR (ecallantide injection) if you are allergic to KALBITOR (ecallantide injection) .

What should I tell my doctor before I receive KALBITOR (ecallantide injection) ?

Before receiving KALBITOR (ecallantide injection) , tell your doctor if you:

  • have ever had an allergic reaction to KALBITOR (ecallantide injection) . See “Who should not take KALBITOR (ecallantide injection) ?“
  • are pregnant or plan to become pregnant. It is not known if KALBITOR (ecallantide injection) will harm your unborn baby.
  • are breast-feeding or plan to breast-feed. It is not known if KALBITOR (ecallantide injection) passes into your breast milk.

Tell your doctor about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.

Know the medicines you take. Keep a list of them to show to your doctor and pharmacist when you get a new medicine.

How will I receive KALBITOR (ecallantide injection) ?

For each dose, you will receive 3 injections just under the skin (subcutaneous or SC injections) of your abdomen, thigh, or upper arm.

What are the possible side effects?

KALBITOR (ecallantide injection) can cause serious allergic reactions. See “What is the most important information I should know about KALBITOR (ecallantide injection) ?“).

Common side effects of KALBITOR (ecallantide injection) include:

  • headache
  • nausea
  • diarrhea
  • fever
  • injection site reactions, such as redness, rash, swelling, itching, or bruising
  • stuffy nose

Call your doctor for advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

General information about KALBITOR (ecallantide injection)

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. This Medication Guide gives you the most important information about KALBITOR (ecallantide injection) . If you would like more information, talk with your doctor. You can ask your pharmacist or doctor for information about KALBITOR (ecallantide injection) that is written for health professionals.

What are the ingredients of KALBITOR?

Active Ingredient: ecallantide
Inactive ingredients: disodium hydrogen orthophosphate (dihydrate), monopotassium phosphate, potassium chloride, sodium chloride in water for injection.

This Medication Guide has been approved by the U.S. Food and Drug Administration. U.S.

Last reviewed on RxList: 12/14/2009
This monograph has been modified to include the generic and brand name in many instances.


Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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