Contains standardized milk thistle extract Silymarin-360 is a food supplement with 80% standardized Silybum marianum extract, which you may know better as milk thistle extract. Each capsule of Silymarin-100 contains 100 mg of this plant extract. You can use this supplement as a supplement to your healthy and varied diet. Silymarin-100 should not be used during pregnancy, when trying to become pregnant or when breastfeeding.