Seven Mile Beach for Beach Lovers Swisse Ultiboost Vitamin D 60 Capsules. Give bones and teeth some TLC with Swisse Ultiboost Vitamin D. This premium quality formula maintains healthy bones and teeth, immune system health, and supports the absorption of dietary calcium. Humans produce vitamin D when the body is exposed to sunlight, however, inadequate sun exposure can mean that many peoples vitamin D levels are low, and they would benefit from an alternative source. This daily supplement is formulated with 25 micrograms of naturally derived vitamin D3, which is retained in the bloodstream more effectively when compared to vitamin D2 (a synthetic form) and so provides a convenient way of maintaining healthy vitamin D levels.