Primary chemical constituents of Milk Thistle include flavolignans (silymarin), tyramine, histamine, gamma linoleic acid, essential oil, mucilage, and bitter principle.

• 水飞蓟的基本化学成分有：水飞蓟素，酪胺，组胺，伽马亚油酸，精油，胶浆和苦味质。