This "sunshine" vitamin is in particularly short supply during the winter months as we can only make vitamin D through our skin from March to October in the UK. Low vitamin D levels are linked to many health conditions including bone pain and fractures and as there are only a few food sources of vitamin D, most of us will need to supplement to make sure we have sufficient vitamin D. As well as facilitating calcium absorption for healthy bones and teeth, vitamin D also contributes to the normal function of muscles and the immune system. Formulated with vitamin D3 - the active form of the vitamin naturally made in the body. Our new higher strength vitamin D provides 2000iu vitamin D3 in vegetarian capsules - ideal for boosting your levels and supporting health.