The European Panel on Dietetic Products, Nutrition and Allergies has recently increased their tolerable upper limit for vitamin D. Following a request from the European Commission, the panel took a look at research to date to re-evaluate if a change in the upper limit was necessary.
In result, the panel raised the upper limit to 4,000 IU of vitamin D/day for adults and teenagers older than eleven, despite finding no evidence of hypercalcemia or hypercalcuria in supplementation up to 11,000 IU/day. The panel cited that they did not want to raise the upper limit higher for the time being in order to take “into account uncertainties associated with these studies.”
Children between 1-10 years old, the panel proposed an upper limit of 2000 IU/day. For infants under one year old, the upper limit was set at 1,000 IU/day.
Their scientific opinion can be found in full in the European Food Safety Journal.