Nature's bounty vitamin d - the "sunshine vitamin" is an essential nutrient that the body creates by converting cholesterol in the body via sunshine. However, today's culture of cubicles, sunscreen, and near-round-the-clock indoor living minimizes our exposure to natural sunlight for the needed period of time for vitamin d to form. Supplementing with nature's bounty vitamin d3 is an easy way to increase your daily intake of this important nutrient.