Commonly used as seasoning, it can also be used for mental symptoms caused by increased blood hydrogen such as hepatic encephalopathy and hepatic coma. Glutamate is an amino acid, sodium is a metal element, and sodium and glutamic acid combine to form sodium glutamate. Widely used in family, catering industry and food processing industry, it has the function of improving umami flavor. Sodium glutamate can combine with excess hydrogen in blood to form harmless glutamine which can be excreted from urine, thus reducing blood ammonia, expelling ammonia toxicity and alleviating symptoms of hepatic encephalopathy. Sodium glutamate can also participate in brain protein metabolism and glucose metabolism, promote the oxidation process and improve the function of central nervous system. The side effects of using sodium glutamate include blushing, vomiting, facial flushing, headache and chest tightness. It can also cause serious alkalosis and electrolyte imbalance. Sodium bicarbonate is a prescription drug, which must be prescribed by a doctor according to the condition. Women in lactation and pregnancy should use sodium glutamate with caution.