The Norway Food Safety Authority has concluded that the vitamin D daily recommended intake (RDI) should be doubled from 400 to 800 IU/day for the whole population.
Currently Norwegians are recommended to take 400 IU/day for children older than two, adolescents, and adults, with adults over the age of 75 supplementing with 800 IU/day. As of now, less than 50% of Norway’s population achieves these recommendations.
“To ensure intake of 20 microgram [800 IU] vitamin D per day in elderly, a daily dosage of 20 microgram from food supplements is justified,” the NSFA explained. “If the maximum limit for vitamin D in supplements is increased to 20 microgram per daily dosage, all age groups including elderly above 75 years can cover the recommended intake without any risk of exceeding UL.”
Assessment of maximum amounts of vitamin A and D in food supplements. Norwegian Scientific Committee for Food Safety. January 2013.