Vitamin D3+K2 by Big Nature is a dietary supplement suitable for use as a daily supplement for adults over 75. The formula contains a combination of D3 and K2 in black cumin oil. Learn about the properties of vitamins D and K and K help maintain healthy . Vitamin D also helps: in maintaining healthy teeth, in the proper functioning of muscles, in the proper functioning of the immune system, in the proper absorption/utilization of phosphorus and in maintaining the proper level of calcium in the blood. One capsule provides 100 µg of vitamin D, which is equivalent to 2000% of the recommended daily intake for an adult, and 100 µg of vitamin K2 MK-7, which is equivalent to 133% of the recommended daily intake for an adult. A 60-capsule pack provides enough for 2 months of supplementation as directed.