Immune, muscle, teeth and bone health support supplement: contains one 220 count bottle of Nature Made Vitamin D3 2000 IU (50 mcg) Tablets for a 220-day supply | Nature Made Vitamin D 2000 IU tablets support bone health, teeth health, muscle health, and provide immune support | These Vitamin D 2000IU tablets help improve calcium absorption and contain 50mcg of Vitamin D 3, the body’s preferred form of Vitamin D | Helps slow biological aging of cells; In a clinical study, taking 2000 IU vitamin D3 supplements for 4 years helped prevent leukocyte telomere shortening, preventing the equivalent of approx 3 years of cellular aging compared with placebo in older adults | Adults, take one Vitamin D3 tablet daily with water and a meal | Sourced from high-quality ingredients, this Nature Made Vitamin D3 supplement is gluten free and has no color added and no artificial flavors