It is recommended to increase dietary intake of vitamin D during the winter months when the body has a limited ability to produce sufficient amounts of vitamin D    Vitamin D helps maintain healthy bones and teeth, the normal absorption and use of calcium, the process of cell division and the normal functioning of the immune system, and the maintenance of normal muscle function.    Adequate vitamin D intake is essential especially for people for whom sun exposure is limited or not recommended.    Does not contain: artificial colors, preservatives, lactose, gluten, salt, yeast.