Swisse Ultiboost Vitamin D supports bone and teeth health helps maintain Vitamin D levels in the body where exposure to sunlight is inadequate. It also supports dietary calcium absorption and supports immune system health and function. Swisse Ultiboost Vitamin D is a premium quality formula that maintains healthy bones and teeth, bone density supports the absorption of dietary calcium, and maintains immune system health and function. Vitamin D is produced by the body when it’s exposed to sunlight, however inadequate sun exposure can sometimes mean our body’s vitamin D levels are low – in fact, nearly one quarter of Australian adults are deficient in vitamin D*. This supplement contains 25 micrograms of vitamin D3, which is retained in the bloodstream more effectively when compared to vitamin D2 (a synthetic form). *Australian Health Survey: Biomedical Results for Nutrients, 2011-12 Suitable For: Adults