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Haegarda

Generic name: C1 esterase inhibitor (human)

What is Haegarda used for?

  • Haegarda is used to prevent swelling attacks in people with hereditary angioedema (HAE).

Before taking Haegarda, tell your doctor:

  • If you are allergic to Haegarda; any part of this medicine; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.

This medicine may interact with other drugs or health problems.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Haegarda with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Haegarda?

  • Tell all of your health care providers that you take Haegarda. This includes your doctors, nurses, pharmacists, and dentists.
  • Unsafe allergic effects may rarely happen.
  • Keep epinephrine with you at all times.
  • Blood clots have happened with Haegarda. The chance may be raised if you have a certain type of catheter or device in a vein or if you take certain drugs like estrogens or androgens. The chance may be raised if you have ever had heart or blood vessel disease, stroke, thick blood, or a blood clot. The chance may also be raised if you have not been able to move around for some time. Talk with your doctor.
  • This medicine is made from human plasma (part of the blood) and may have viruses that may cause disease. This medicine is screened, tested, and treated to lower the chance that it carries an infection. Talk with the doctor.
  • This medicine will not treat HAE attacks. This medicine is only used to prevent these health problems. Talk with the doctor to if you have questions about how to treat HAE attacks.
  • Talk with the doctor before you travel. You will need to bring enough of Haegarda for use during travel.
  • If your weight changes, talk with your doctor. The dose of Haegarda may need to be changed.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

How is Haegarda best taken?

Use Haegarda as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • It is given as a shot into the fatty part of the skin.
  • If you will be giving yourself the shot, your doctor or nurse will teach you how to give the shot.
  • This medicine needs to be mixed before use. Follow how to mix as you were told by the doctor.
  • If stored in a refrigerator, let Haegarda come to room temperature before mixing. Do not heat Haegarda.
  • Do not use if it has been frozen.
  • Do not use if the solution is cloudy, leaking, or has particles.
  • Throw away any part left over after the dose is given.
  • Do not give if the solution is not clear and colorless.
  • Use the dose within 8 hours after mixing.
  • Move the site where you give the shot with each shot.
  • Throw away needles in a needle/sharp disposal box. Do not reuse needles or other items. When the box is full, follow all local rules for getting rid of it. Talk with a doctor or pharmacist if you have any questions.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

What are the side effects of Haegarda that I need to call my doctor about immediately?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Very bad dizziness or passing out.
  • Change in color of mouth to blue.
  • A fast heartbeat.
  • Very bad headache.
  • Weakness on 1 side of the body, trouble speaking or thinking, change in balance, drooping on one side of the face, or blurred eyesight.
  • Call your doctor right away if you have signs of a blood clot like chest pain or pressure; coughing up blood; shortness of breath; swelling, warmth, numbness, change of color, or pain in a leg or arm; or trouble speaking or swallowing.

What are some other side effects of Haegarda?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Irritation where the shot is given.
  • Nose or throat irritation.
  • Dizziness.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If overdose is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Haegarda?

  • Store at room temperature or in a refrigerator. Do not freeze.
  • Store in the original container to protect from light.
  • After mixing, do not refrigerate or freeze.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.

Consumer information use and disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Haegarda, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take Haegarda or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Haegarda. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Source: Wolters Kluwer Health. Last updated March 27, 2020.