The information about vitamin D are versatile. Is it necessary that one takes it? Or is it pure advertising of the pharmaceutical industry? If you want to know details, one should be smart machen.Aus own experience I can tell by reading books that have taken in at a flu wave vitamin D3 and healthy blieb.Ich did not die and did not become ill, although I daily daily Vitamin D3 1000 taken hatte.Ich've met some doctors who gave their patients Vitamin D3 and also himself took high doses and very much healthier were.