The European Food and Safety Authority (EFSA) has determined the recommendation for vitamin D intake in adults to be 15 micrograms per day.
The adequate intake for vitamin D for adults has been determined by EFSA to be 15 micrograms per day. This advice also holds for children older than 1 year. For young children (7-11 months) the recommendation for vitamin D is 10 micrograms per day. This advice takes into account the fact that the body produces vitamin D in the skin under the influence of sunlight.
Source: EFSA (2016). Scientific Opinion on Dietary Reference Values for vitamin D. European Food Safety Authority, 2016
In the United Kingdom, the current advice of the Scientific Advisory Committee on Nutrition (SACN) is a daily intake of 10 micrograms vitamin D for all population groups aged 4 years and more (including pregnant/lactating women) from all sources including food, fortified foods, and supplements.