ICONFIT Vitamin D3 contains a high dose of vitamin D (4000 IU). It is one of the most important vitamins – it affects the proper functioning of all our organs. Vitamin D is especially important to consume during the fall-winter period and for older people year-round. Vitamin D3 is necessary for keeping the bones, teeth and muscles healthy. It also contributes to the normal functioning of the immune system. Produced using only the highest quality plant based pullulan capsules. Supports the immune system and promotes the absorption of calcium and phosphorus. Helps muscles work properly and helps maintain bone and dental health.