Amino acid infusion too fast can lead to adverse reactions such as nausea, vomiting, chest tightness and headache. Amino acid injection is an intravenous nutrient solution used to replenish nutrients needed by the body and improve immunity. Infusion too fast, the drug components irritate the gastrointestinal tract, causing nausea, vomiting and other uncomfortable symptoms. When infusing amino acids, you should follow your doctor's words, control the infusion rate, and consult your doctor promptly for proper guidance.