Silybum (milk thistle) is a genus of two species of thistles in the daisy family. The name "milk thistle" derives from a feature of the leaves, which are prominently banded with splashes of white. Historically, these milky bands were said to be Mother Mary's milk, and this is the origin of another common name, St. Mary's thistle. The most widespread species is Silybum marianum. Claims have been made since ancient times that the active flavanoid-lignan group of constituents, called silymarin, contained only in the seed shell has liver-protective and regenerative properties, as well as antioxidant effects. Your domestic cattle deserves the best food