Molecular isolates.....just does not seem right...too many unknowns
When you take vitamin supplements, they can interfere with the levels of different medications and substances that are absorbed by your body. Increased vitamin D levels appear to be linked with a decrease in the amount of vitamin K in your body, though it is not known if taking vitamin D directly affects vitamin K.
Vitamin D is a fat-soluble vitamin that can be obtained from your diet or made by your body when your skin is exposed to sunlight. One of the most important roles of vitamin D is in maintaining the strength of your bones. You need vitamin D to absorb calcium, one of the main minerals in your bones. Vitamin D also stimulates some of your bone cells and a lack of vitamin D can make your bones weak.
There is some evidence that having more vitamin D in your body can decrease the levels of vitamin K. A study that examined the relationship between vitamin D and vitamin K in Danish girls was published in a 2010 issue of the "British Journal of Nutrition." This study found that girls with elevated vitamin D levels had lower levels of a substance known as undercarboxylated osteocalcin, which is often used as a marker for vitamin K levels, suggesting that high amounts of vitamin D decrease the levels of vitamin K.
Vitamin K is another fat-soluble vitamin with multiple roles in the human body. It is best known for its importance in blood clotting; many of the chemical reactions needed to make a blood clot require vitamin K. Vitamin K is also needed to maintain the health of bones and low levels of undercarboxylated osteocalcin is associated with an increased risk of bone fractures. A lack of vitamin K can cause poor blood clotting and impaired bone health.
Although there appears to be a link between vitamin D and vitamin K levels, it has not been proven that taking vitamin D supplements will decrease the amount of vitamin K in your body. Talk to your doctor before taking any sort of vitamin supplement, as too much vitamin D can cause a dangerous increase in blood calcium levels and may also weaken your bones.