Brighten up your health regiment. Sunshine in a Caplet Super Vitamin D provides 1,000 IU of cholecalciferol per serving. Cholecalciferol, also known as vitamin D3, is naturally produced by the skin's exposure to sunlight. Vitamin D is critical for overall wellness, promoting a healthy immune system and nervous system. Vitamin D plays an important role in calcium absorption, supporting healthy bones and joints. Vitamin D may also enhance a positive mood; just think of how good that first sunny spring day feels. Supplementing with Sunshine Vitamin D products provides the natural health boost of sunlight without direct UV exposure and will help you shine every day.