Pharmaceutical composition containing 18 amino acids

The invention discloses a pharmaceutical composition containing 18 amino acids. The pharmaceutical composition containing 18 amino acids is characterized in that raw materials of 18 amino acids and auxiliary materials of an antioxidant and a pH conditioning agent are prepared into compound amino acid injections (18AA-IV) having different concentrations, wherein the compound amino acid injection is the pharmaceutical composition containing 18 amino acids and has a pH value of 3.5 to 5.5. The pharmaceutical composition containing 18 amino acids does not contain a sulfite antioxidant and thoroughly prevents the damage of sulfites on the human body. Products of the pharmaceutical composition containing 18 amino acids are safer in clinical use. An accelerated stability test proves that the pharmaceutical composition (18AA-IV) containing 18 amino acids has the stability the same as or superior to the stability of commercial sulfite-containing like products.