Purpose of Formula• High strength formula • Supports healthy bones & teeth • Supports immune function • Essential fat soluble vitamin • Safeguards intake of this essential nutrient, usually produced in the body as a result of exposure to sunlight. Other Uses • Promotes calcium absorption in the gut. • Important during pregancy & breast-feeding, an essential nutrient for a growing infant. • Also recommended by the UK government for: children aged 6 months to 5 years, those over the age of 65, individuals with darker skin, those who cover their skin for cultural reasons or those who do not spend a lot of time outdoors.