Jarrow Silymarin 80% 150mg - 100 Capsules - Milk Thistle in Latin is Silybum marianum . Jarrow's Silymarin 30:1 concentrate is standardized to contain 80% Silymarin from Milk Thistle seeds. Jarrow Formulas Silymarin is composed of three flavonoids: primarily Silybin and minor amounts of Silydianin and Silychristin , which support liver function by raising protective glutathione levels.