Vitamin D is a fat-soluable vitamin that is available in a few certain foods and (more readily) through dietary supplementation.  It is also available endogenously when ultraviolet rays from the sun hit the skin and trigger vitamin D synthesis. 

Vitamin D is has the ability to increase the amount of calcium your body absorbs and thus plays a vital role in helping to build strong and healthy bones.  Young children who are just developing their bones and teeth, as well as older adults who may need help maintaining the integrity of their bones, especially need the support that Vitamin D provides.

Without adequate Vitamin D, children can become victims of rickets and older adults may get osteomalacia, as their bones weaken and become prone to skeletal defects.

Recommended Dosage

The typical daily dosage range for Vitamin D is between 400 IU and 1000 IU.  Take one softgel each day, with a meal.