In clinical work, I often see part of the hospitalized elderly, told the doctor: doctor, give me some amino acid infusion? I am tired and dizzy, and I usually catch cold easily. I heard that amino acids can improve resistance, prevent colds and improve fatigue. Do compound amino acids really have such powerful functions? Let’s start with the composition and function of amino acids. The full name of the amino acid is Compound Amino Acid Injection (18AA). The ingredients are: L-Proline, L-Serine, L-Alanine, L-Isoleucine, L-Leucine, L-Mentholine, L-Tyrosine and so on. The main function is: for protein intake is insufficient, absorption obstacles and other amino acids can not meet the body’s metabolic needs of patients. It is also used to improve the nutritional status of patients after surgery. To summarize, amino acid injection can only replenish limited amino acids, and cannot improve resistance, not to mention preventing colds. If you can eat and drink normally, there is no need for intravenous infusion of amino acids. What’s more, random intravenous infusion is also prone to damage blood vessels, causing phlebitis, infusion reaction, etc.