Why don't you take magnesium with multivitamins?

Some nutrients, such as calcium, can't be included in a multivitamin at 100% – if it was, the multivitamin would be too large to swallow. Magnesium and potassium levels are kept low to avoid drug-nutrient interactions, so we need to get these nutrients primarily through our diet (see food sources below.).

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Subsequently, should d3 and k2 be taken together?

Current research shows the important synergistic relationship between Vitamin K2 and Vitamin D3. Taking Vitamin D3 with Vitamin K2 helps to ensure the calcium transported by the Vitamin D is absorbed by your bones where it's needed, rather than accumulating in deposits in your arteries. Can you absorb vitamin D without vitamin K? No strong evidence proves that moderate amounts of vitamin D are harmful without an adequate intake of vitamin K. However, research is ongoing, and the picture might become clearer in the near future.

How much vitamin K should you take?

The recommended adequate intake for vitamin K depends on age and gender. Women aged 19 years and over should consume 90 micrograms (mcg) a day, and men should have 120 mcg.