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FIRAZYR (icatibant) is a synthetic decapeptide with five non-proteinogenic amino acids. The chemical structure of icatibant acetate is presented in Figure 1.
Figure 1 : Chemical Structure
Chemical name: D-Arginyl-L-arginyl-L-prolyl-L[(4R)-4-hydroxyprolyl]-glycyl-L[3-(2-thienyl)alanyl]-Lseryl-D-(1,2,3,4-tetrahydroisoquinolin-3-ylcarbonyl)-L[(3aS,7aS)-octahydroindol-2-ylcarbonyl]-Larginine, acetate salt
FIRAZYR is provided as a sterile, isotonic, and buffered solution of icatibant acetate in a single-use, prefilled syringe for subcutaneous administration. Each mL of the solution contains 10 mg of icatibant (free base). Each prefilled syringe delivers 3 mL of solution equivalent to a 30 mg icatibant dose. The solution is clear and colorless.
The solution also contains sodium chloride, glacial acetic acid, sodium hydroxide and water for injection with a pH of approximately 5.5. The solution does not contain preservatives.
Pharmacological class: Icatibant is a bradykinin B2 receptor antagonist.
What are the possible side effects of icatibant (Firazyr)?
Get emergency medical help if you have any of these signs of an allergic reaction after using icatibant:
- chest pain or discomfort, fast or weak heartbeat;
- flushing (warmth, redness, or tingly feeling);
- feeling like you might pass out;
- itching, rash, or hives;
- runny nose, sneezing, stuffy nose;
- wheezing, cough, throat irritation, trouble breathing; or
- swelling of your face, lips, tongue, or throat.
An allergic reaction to icatibant can cause symptoms that are very similar to the signs of hereditary angioedema....
Last reviewed on RxList: 9/1/2011
This monograph has been modified to include the generic and brand name in many instances.
Additional Firazyr Information
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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