Taurolithocholic Acid sodium salt is primarily used in research settings to study bile acid metabolism and its role in liver and gastrointestinal health. It is often employed in experiments to investigate the mechanisms of bile acid signaling pathways, particularly those involving nuclear receptors like FXR (farnesoid X receptor) and TGR5 (Takeda G protein-coupled receptor 5). Researchers utilize it to explore its effects on cholesterol homeostasis, inflammation, and cell proliferation. Additionally, it serves as a tool in studying cholestasis, a condition characterized by impaired bile flow, and its potential therapeutic applications. Its use in in vitro and in vivo models helps elucidate the complex interactions between bile acids and cellular functions.