Yamamoto Nutrition Vitamins K2 + D3 30 caps.

Yamamoto® Research Vitamin K2 + D3 is a dietary supplement containing vitamin K2 and a high dose of vitamin D3. Vitamin K contributes to normal blood clotting and the maintenance of normal bone condition*. Vitamin D contributes to the normal absorption and/or use of calcium and phosphorus, normal calcium levels in the blood, and helps maintain normal bone and teeth condition.

Vitamin K2 is much less known than other vitamins and only recently has its important role, especially for heart, bone, and brain health, been increasingly emphasized by scientific research. It has become a subject of ongoing studies, making it a very valuable nutritional preparation in clinical and preventive medicine.
K2, or menaquinone, is a fat-soluble vitamin belonging to the vitamin K family. Vitamin K1, also called "phylloquinone," is found in plants and is converted in the body to vitamin K2, so this form is considered the least effective because, to ensure any noticeable effect, it depends on conversion to the "more active" K2 form. There is also vitamin K2 MK-4, found in meat, eggs, and dairy products, and vitamin K2 MK-7 - the most studied form of vitamin K, which preserves cardiovascular and bone health. It has high bioavailability; the body quickly absorbs and metabolizes it. This form of vitamin K is found in grass-fed meat or in fermented soybeans (natto) typical of Japanese cuisine and in fermented cheeses, making it quite difficult to find in modern Western diets.