Vitamin D3 is the most bioavailable form of this nutrient. Food State Vitamin D3 is complete with lactobacillus which provides all the necessary food factors to aid absorption in the body. Benefits:• Vitamin D may help to build strong bones & teeth • Vitamin D supports the normal usage of calcium & phosphorus in the body. • Vitamin D helps regulate immune activity. • Vitamin D supplementation may be beneficial during winter months. • Suitable for children & the elderly. • Suitable for vegetarians. Doctors & scientists are now also suggesting people, particularly those at risk of vitamin D deficiency such as the elderly & pregnant women supplement with 20ug Vitamin D3 per day.