 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  Subcutaneous: Icatibant is used to treat sudden attacks of a certain immune system condition passed down through families called hereditary angioedema (HAE). Although this medication is not a cure for HAE, icatibant may lessen the symptoms of an attack such as rapid swelling and pain of the hands, arms, feet, legs, face, tongue, and upper airway. When attacks involve the stomach/intestines, symptoms may include abdominal pain/cramps, diarrhea, constipation, or vomiting. Attacks may happen at any time. However, stress, injury, or illness may trigger attacks in some people.Icatibant works by blocking the action of a natural substance in the body called bradykinin. Bradykinin is thought to cause the symptoms of an HAE attack. How to use Sajazir 30 Mg/3 Ml Subcutaneous Syringe Bradykinin B2 Receptor Antagonists (Acute) Read the Patient Information Leaflet before you start using icatibant and each time you get a refill. If you are giving this medication to yourself at home, learn all preparation and usage instructions in the product package and from your health care professional. Your health care professional will also teach </s>