How to use Vitamin D3

• Take Vitamin D by mouth as directed. Vitamin D is best absorbed when taken after a meal but may be taken with or without food.  Follow all directions on the product package. If you have any questions, ask your physician.

Source of Vitamin D:

• The major natural source of the vitamin is synthesis of cholecalciferol in the lower layers of epidermis of the skin through a chemical reaction that is dependent on sun exposure. Cholecalciferol and ergocalciferol can be ingested from diet and supplements. Only a few foods, such as the flesh of fatty fish, Cooked egg yolk, Fish liver oils, such as cod liver oil, Tuna , canned in oil naturally contain significant amounts of vitamin D.

  In general, vitamin D₃ is found in animal source foods , particularly fish, meat, offal , egg and dairy. Vitamin D₂ is found in fungi and is produced by ultraviolet irradiation of  ergosterol.

Deficiency of Vitamin D Causes:

• Vitamin D deficiency is widespread in the European population. Severe vitamin D deficiency in children causes rickets , a softening and weakening of bones, which is a rare disease in the developed world. Vitamin D deficiency is found worldwide in the elderly and remains common in children and adults. Deficiency results in impaired bone mineralization and bone damage which leads to bone-softening diseases, including rickets in children and osteomalacia in adults. Low blood calcifediol (25-hydroxy-vitamin D) can result from avoiding the sun. Being deficient in vitamin D can cause intestinal absorption of dietary calcium to fall to 15%. When not deficient, an individual usually absorbs between 60 and 80%.