Biocare bio d 400iu 15ml biocare 400iu bio d liquid provides liquid vitamin d to facilitate absorption vitamin d is an important nutrient for strong bones and for the health of many bodily functions including the immune system biocares liquid bio d is a useful way to top up your vitamin d levels each drop provides 100 ius of vitamin d3ideal for individuals with malabsorption suitable for veterinary use as a foodsupplement for animals detergent and surfactant free suitable for children