Helps support immune function D3 1000 IU from Webber Naturals offers a daily dose of this critical nutrient to help support immune function and for the development and maintenance of healthy bones and teeth. Vitamin D is sometimes called the “sunshine vitamin” because it is naturally formed in the skin through exposure to sunlight. Long winters, clouds, smog, use of sunscreen, and living at more northerly latitudes reduce sun exposure and vitamin D synthesis. This makes supplemental support an important component to maintaining health.Vitamin D is an important factor in bone health and is essential for calcium and phosphorous absorption. It helps reduce calcium excretion and facilitates the development and maintenance of bones and teeth. It also has an important role in maintaining healthy immune function all year round.D3 1000 IU from Webber Naturals fulfills the daily recommended intake in just one dose. It is free of artificial colours, preservatives, and sweeteners.