Answer:
IM or subq Epinephrine is the first-line treatment for anaphylaxis. It is an injectable medication that is administered either intramuscularly (IM) or subcutaneously (subq). Epinephrine is a hormone and a neurotransmitter that plays a vital role in the body's response to stress. It works by causing vasoconstriction, which increases blood pressure and decreases swelling, and bronchodilation, which dilates the airways. This is particularly useful in anaphylaxis, which is a severe allergic reaction that can cause life-threatening symptoms such as airway constriction, difficulty breathing, and low blood pressure. By administering epinephrine, it will provide fast relief in anaphylaxis, as it will help to open the airways, increase blood pressure, and reduce swelling, thus improving the patient's cardiovascular and respiratory function.