is a liver aid. It looks like a good resource for preventing cholestasis. Tauroursodeoxycholic Acid (TUDCA) is an ambiphilic bile acid. It is the taurine conjugate form of ursodeoxycholic acid (UDCA). Humans are found to have trace amounts of TUDCA. However, bears contain large amounts of TUDCA in their bile. TUDCA has diminishing apoptotic effects, helping with cardiac function, Huntington's disease, Parkinson's Disease, and stroke. Recently, TUDCA has been found to have protective effects in the eye, especially concerning retinal degenerative disorders.