Vitamin D2 is also known as "ergocalciferol," and vitamin D3 is also known as "cholecalciferol ... of vitamin D needed to prevent rickets is 100 IU (2.5 mcg) per day in infants with little ...

Historically, 400 IU (10 ug) of vitamin D was recommended for better health because it closely approximated the amount of vitamin D in a teaspoonful of cod liver oil. However, 800 to 1,000 IU is ...

Vitamin D2 (ergocalciferol) is largely human-made and added to foods, whereas vitamin D3 (cholecalciferol ... for vitamin D is listed in international units (IU) and micrograms (mcg) based on your age ...

In terms of supplementation, many get it in the form of Vitamin D3, also known as cholecalciferol. This form is similar to what our skin makes when we’re out in the sun. But, are you taking your ...

44 In accordance with the aforementioned in vitro data, a 16-week clinical trial showed that 2000 IU daily vitamin D 3 supplement counterbalanced ... In a random sample of 100 study participants, ...