Vitamin D produced from sun exposure and consumed in food or through direct oral intake is inactive. The enzymes that activate vitamin D require Mg for their proper function.
Mg supports the transport of vitamin D throughout the body.
Vitamin D can increase the absorption of Mg.
The body needs adequate levels of Mg to activate and transport vitamin D.
Vitamin D can enhance the absorption and retention of Mg.
Taking one component without the other deprives the body of the benefits of this harmonious cooperation.