Displaying 2 results of Silybin Stable Isotopes Silybin, also known as silymarin, is a flavonoid that is derived from the milk thistle plant. Silybin stable isotopes are isotopes of silybin that have a constant atomic mass and do not decay over time. These isotopes are used in research studies to track the metabolism and distribution of silybin in the body. They can also be used to develop new diagnostic and therapeutic approaches for liver diseases, such as cirrhosis and hepatitis.