Vitamin D3 Drops For Kids, 400IU – 10 ml.

For vitamin D3 to be absorbed by the body and thus develop its full effect for the immune system and defences, for muscles and bones, for growth and development, a sufficient supply of magnesium is vital. Only when the magnesium level is right is the body able to convert vitamin D3 into the active form. But vitamin D is also an important antagonist for magnesium: It is able to promote the absorption of magnesium in the intestine.