Taurocholic acid-d4-1 sodium (Sodium taurocholate-d4-1) is the deuterium labeled Taurocholic acid sodium (HY-N0545). Taurocholic acid sodium (Sodium taurocholate) has marked bioactive effects such as an inhibitory potential against hepatic artery ligation induced biliary damage by upregulation of VEGF-A expression. Taurocholic acid sodium has immunoregulation effect[1].