The normal range for Vitamin D is 20 nanograms/milliliter to 50 ng/mL is considered adequate for healthy people and Vitamin B12 normal range is 190 and 900 nanograms per milliliter (ng/mL). Food sources rich in vitamin D are cheese. egg yolks. foods fortified with vitamin D, like some dairy products, orange juice, soy milk, and cereals. Vitamin B12 rich food are eggs, fortified dairy products, fortified cereals and nutritional yeast.