Name change - this product used to be known as Bio-D. As well as updating the packaging we've changed its name, however the dose and ingredients are still exactly the same Liquid vitamin D3 in a simple, hypoallergenic olive oil base, for immune and bone support Clinically effective - vitamin D has far reaching benefits including helping to maintain normal bones, teeth, immunity and muscle function, and also playing a role in cell division Optimum support - optimally absorbed liquid providing 400iu of vitamin D3 per daily dose, which can be scaled up or down to suit individual needs Pure - in a simple, hypoallergenic base of extra virgin olive oil Flexible - only use what you need, easily mixed into liquids or take under the tongue, and convenient to use on the go Especially suited to individuals who have difficulty swallowing tablets or capsules, and those with digestive and absorption difficulties 99 days' supply at 4 drops a day