What is the maximum recommended daily dose?


With regard to Upper Limits (UL), the EFSA have set this at 100 μg (4000 IU) per day for vitamin D1. This applies to adults in general, including vitamin D deficient pregnant and lactating women. Given that rapid growth and bone formation takes place during late childhood, a similar UL has also been set for 11-17 year olds.23 Similarly, an UL of 100 μg per day for adults has also been established by the Institute of Medicine, along with an adequate circulating level of 50 to 125 nmol/L 25(OH)D.2


  1. European Food Safety Authority (2012). Scientific Opinion on the Tolerable Upper Intake Level of Vitamin D. EFSA Panel of Dietetic Products, Nutrition and Allergies. EFSA Journal; 10(7): 2813.
  2. IOM Report on Calcium and Vitamin D requirements. J Clin Endocrinol Metab, January 2011, 96(1):53-58