Bio-Vitamin D3 from Pharma Nord is a tiny 7mm wide gel 'pearl' containing the natural cholecalciferol form of D3. The vitamin D3 is dissolved in olive oil, which is crucial for optimal absorption. Bio-Vitamin D3 gives precise amounts of D3 in an easy-to-swallow preparation that is blister-packed to protect the active ingredients. It is made to pharmaceutical standards with certificates of analysis available for every batch. The Uk government recommends vitamin D3 supplementation for several key groups of people, including all pregnant and breast-feeding mothers, all young children from 6 months to 5 years old, people over 65 years of age and those with low or no exposure to the sun.