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Brand Names: Berinert, Cinryze

Generic Name: complement C1 esterase inhibitor (Pronunciation: KOM ple ment C1 ES ter ase in HIB it or)

• What is complement C1 esterase inhibitor (Cinryze)?
• What are the possible side effects of complement C1 esterase inhibitor (Cinryze)?
• What is the most important information I should know about complement C1 esterase inhibitor (Cinryze)?
• What should I discuss with my health care provider before using complement C1 esterase inhibitor (Cinryze)?
• How should I use complement C1 esterase inhibitor (Cinryze)?
• What happens if I miss a dose (Cinryze)?
• What happens if I overdose (Cinryze)?
• What should I avoid while using complement C1 esterase inhibitor (Cinryze)?
• What other drugs will affect complement C1 esterase inhibitor (Cinryze)?
• Where can I get more information?

What is complement C1 esterase inhibitor (Cinryze)?

Complement C1 esterase inhibitor is a man-made form of a protein that occurs naturally in the bloodstream and helps control inflammation in the body. In people with hereditary angioedema, complement C1 esterase inhibitor does not function properly or occurs in low levels.

Complement C1 esterase inhibitor is used to prevent attacks of angioedema in people with hereditary angioedema.

Complement C1 esterase inhibitor may also be used for other purposes not listed in this medication guide.

What are the possible side effects of complement C1 esterase inhibitor (Cinryze)?

Stop your IV infusion and get emergency medical help if you have any of these signs of an allergic reaction: hives; wheezing or difficult breathing; feeling like you might pass out; or swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have any other serious side effect, such as:

• sudden numbness or weakness, especially on one side of the body;
• sudden headache, confusion, problems with vision, speech, or balance;
• stomach pain or swelling;
• chest pain, sudden cough, rapid breathing, fast heart rate; or
• pain or swelling in one or both legs.

Less serious side effects may include:

• cold symptoms such as stuffy nose, sneezing, sore throat;
• mild itching or rash;
• mild headache; or
• back pain.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about complement C1 esterase inhibitor (Cinryze)?

You should not use this medication if you have ever had an allergic reaction to it, or if you have ever had any life-threatening allergic reaction.

If you have certain conditions, you may need a dose adjustment or special tests to safely use this medication. Before using complement C1 esterase inhibitor, tell your doctor if you have a history of stroke or blood clot.

Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of needles, IV tubing, and other items used in giving the medicine. This medication comes with patient instructions for safe and effective use. Follow these directions carefully. Ask your doctor or pharmacist if you have any questions.

If you are using the injections at home, be sure you understand how to properly mix and store the medication. Do not mix the medicine until you are ready to give the injection.

Stop your IV infusion and get emergency medical help if you have any of these signs of an allergic reaction: hives; wheezing or difficult breathing; feeling like you might pass out; or swelling of your face, lips, tongue, or throat.

Other serious side effects may include sudden numbness or weakness, chest pain, confusion, pain or swelling, and problems with vision, speech, or balance.

Complement C1 esterase inhibitor is made from human plasma (part of the blood) and may contain viruses and other infectious agents that can cause disease. Although donated human plasma is screened, tested, and treated to reduce the risk of it containing anything that could cause disease, there is still a small possibility it could transmit disease. Talk with your doctor about the risks and benefits of using this medication.