Usually allergic reactions, nausea, chest tightness, fever and other symptoms are the adverse reactions of Compound Amino Acid Injection. Compound Amino Acid Injection is usually used for patients with poor nutritional status, insufficient protein intake, etc. resulting in insufficient amino acids for the body to metabolize, and its main purpose is to replenish amino acids and improve the nutritional status of post-surgical patients. Some patients may have allergic reactions such as skin rash after using Compound Amino Acid Injection, and sometimes nausea, vomiting, chest tightness, palpitations (rapid heartbeat, often accompanied by panic), chills, fever or headache. It should be noted that severe hepatic and renal insufficiency, patients with severe uremia and patients with metabolic disorders of amino acids are prohibited; severe acidosis, congestive heart failure patients should be used with caution. All medication should be under the guidance of a doctor, and should not be used blindly on its own.