Bio-DK Caps™ supplies 125 mcg (5,000 IU) of vitamin D3, 550 mcg of vitamin K (as K1 phytonadione and K2 menaquinone-7) as a micro-emulsion for enhanced absorption and utilization. In addition to emulsified forms of vitamins D and K, Bio-DK Caps™ contains the enzymes superoxide dismutase (SOD) and catalase. SOD aids in cell repair and provides antioxidant protection against cellular damage from free radicals and environmental toxins.* Catalase converts hydrogen peroxide into oxygen and water, also showing strong antioxidant properties.*