A pleasant Peppermint flavoured oral spray Vitamin D contributes to normal calcium levels, the maintenance of bones and teeth Vitamin D also contributes to the maintenance of normal muscle function, immune system and is involved in the process of cell division Vitamin D3 is produced in our bodies underneath our skin as a reaction to sunlight exposure. Other natural sources of Vitamin D include salmon, mackerel, sardines, milk, eggs and liver. A daily vitamin D supplement may be beneficial to you if you eat no meat or oily fish, cover all of your skin when outdoors, are housebound or rarely outdoors, or are of Asian origin. Vitamin D helps contribute to several important functions in the body: Vitamin D regulates the amount of calcium and phosphate needed to keep bones and teeth healthy. A UK Government report (July 2016) recommended that everyone would benefit from a daily dose of Vitamin D.