Silibinin (also known as "Silybin") is the major active flavolignan constituent of silymarin, which is a combination of flavonolignans extracted from Silybum marianum (milk thistle). Other flavolignans found in silymarin are isosibilinin A and B, silicristin, and silidia..
Ursodeoxycholic acid, or ursodiol, is a secondary bile acid found in the gut. Bile acids are byproducts from the metabolism of gut bacteria/fauna. Ursodeoxycholic acid is found in the human body endogenously and modulates cholesterol levels by breaking apart chole..