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2. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   The EFSA reviewed safe levels of intake in 2012, [167] setting the tolerable upper limit for adults at 100 μg/day (4000 IU), a similar conclusion as the IOM. The Swedish National Food Agency recommends a daily intake of 10 μg (400 IU) of vitamin D 3 for children and adults up to 75 years, and 20 μg (800 IU) for adults 75 and older.

3. Vitamin D toxicity - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_toxicity

   Based on risk assessment, a safe upper intake level of 250 μg (10,000 IU) per day in healthy adults has been suggested by non-government authors. [ 5 ] [ 6 ] Blood levels of 25-hydroxyvitamin D necessary to cause adverse effects in adults are thought to be greater than about 150 ng/mL, leading the Endocrine Society to suggest an upper limit ...

4. Wait, Should You Be Taking Vitamin D2 or D3? - AOL

   www.aol.com/wait-taking-vitamin-d2-d3-150000295.html

   There's lots of confusion around the difference between vitamin D2 and vitamin D3, and which is best for whom. Doctors and experts explain.

5. This is the best time of day to take vitamin D supplements ...

   www.aol.com/news/best-time-day-vitamin-d...

   Most over-the-counter vitamin D supplements are between 1,000 and 5,000 IU, and some are as high as 10,000 IU, says Adamian. "There's so many different supplements, so it's very important to ...

6. How can I get a safe amount of vitamin D? - AOL

   www.aol.com/finance/dark-side-daily-vitamin-d...

   The Office of Dietary Supplements recommends daily vitamin D intakes of 600 IU (15 mcg) for ... (ULs) of what is safe to consume. People 9 and older, for example, may have a maximum 4,000 IU (100 ...

7. Cholecalciferol - Wikipedia

   en.wikipedia.org/wiki/Cholecalciferol

   In the UK: a ‘Safe Intake’ (SI) of 8.5–10 μg/d (340–400 IU/d) for infants < 1 year (including exclusively breastfed infants) and an SI of 10 μg/d (400 IU/d) for children aged 1 to <4 years; for all other population groups aged 4 years and more (including pregnant/lactating women) a Reference Nutrient Intake (RNI) of day10 μg (400 IU/d).