Vitamin A is a group of compounds that support eye health and the maintenance of healthy skin, teeth, and the surface linings for the respiratory, urinary and intestinal tracts. Vitamin A also plays a vital role in the promotion of immune system health. Vitamin D works in conjunction with calcium to promote the development and maintenance of strong bones and teeth. Vitamin D is also essential in the modulation of neuromuscular and immune system function and in the reduction of inflammation. Our vitamin D products are D3, the finest source of vitamin D available.*