Just a spoonful of delicious tropical citrus flavored liquid sunshine174 provides 1667iu of vitamin d3 natures most bioavailable form studies indicate that 1667iu of vitamin d3 every day can help many people achieve optimal calcium absorption and support healthy bone density recent research shows that if youre only getting the daily value youre probably not getting enough for optimal health liquid sunshine vitamin d3 1667iu goes beyond the limited activity of 400iu by providing