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 sufficient Vitamin D to form. Supplementing with Nature's Bounty Vitamin D3 is an easy way to increase your daily intake of this important nutrient. , , Lack of exposure to sunlight may reduce Vitamin D levels in the body, especially during winter or in northern climates. Additionally, skin-protecting sunscreen can reduce your body's ability to meet its daily Vitamin D needs, even during summer. Food is another source of Vitamin D. However, among US adults who obtained Vitamin D from food alone, about 95% had insufficient Vitamin D intake. Nature's Bounty Vitamin D3 is a smart way to ensure your body gets enough Vitamin D. , , Vitamin D3 is a potent and active form of Vitamin D. Vitamin D helps your body absorb Calcium to help support bone density and healthy teeth.* These softgels provide a high-potency source of Vitamin D3 to help maintain neuromuscular health-the combination of the nervous system and the muscles working together. This package includes (2) Nature's Bounty Vitamin D3 5000 IU, 150 Softgels. 125 Mcg (5000 Iu), Supports Strong Bones & Immune Health, Vitamin Supplement, Nearly 50 Years Of Trusted Quality, Your Sunshine Vitamin, Guaranteed Quality, Laboratory Tested, Non Gmo , Storage Instruction - Store at 18-23 degrees C