In vivo, ornithine mainly participates in uric acid cycle and plays an important role in the excretion of ammonia nitrogen. In addition to being used as a reagent and injection in medicine, ornithine is usually used together with arginine to prepare foamed drinks for recovering fatigue. Treatment of liver cirrhosis, disease recovery and physical enhancement.Pharmaceutical intermediates, biochemical research, compound amino acid formula combination, peptide synthesis raw materials. According to cultural records, it can enhance human immunity, resist fatigue and is conducive to human health.