... in water. Pharmacology Action: Milk Thistle is a unique herb which contains a natural compound called silymarin. Silymarin nourishes ... needing to take pharmaceutical drugs. Primary chemical constituents of Milk Thistle include flavolignans (silymarin), tyramine, histamine, gamma linoleic ... acid, essential oil, mucilage, and bitter principle. Milk Thistle is also an antioxidant that is more potent than ...