 <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]  by the body (C1-inhibitor). Symptoms such as rapid swelling of the hands, feet, limbs, face, tongue, or throat can occur. Swelling of the intestinal tract may cause symptoms such as abdominal cramps, diarrhea, or vomiting. Attacks of swelling may occur without reason. However, anxiety, stress, sickness, and surgery may trigger attacks in some people. This medication increases the level of C1-inhibitor to help treat attacks of sudden swelling due to hereditary angioedema. How to use Berinert Kit Read the Patient Information Leaflet if available from your pharmacist before you start using C1-esterase inhibitor and each time you get a refill. If you have any questions, ask your doctor or pharmacist. This medication is given by injection into a vein, at the first signs of an HAE attack, as directed by your doctor. The dosage is based on weight and your medical condition. If you are using this medication at home, learn all preparation and usage instructions from your health care professional. The solution is normally clear and colorless. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely </s>