Vitamin D3 is called 'the vitamin of the decade'. No new research has been published about any other type of vitamin. The current reference values, such as the ADH (recommended daily amount), are regularly adjusted after new permitted research claims may be made.
The studies also show that large populations, in particular seniors and people with dark skin color, are often vitamin D3 deficient, which increases the risk of health risks in the future.
Xtra C & D3 contains vitamin D3, vitamin C and calcium, to protect healthy cells and tissues and is important for the skin.