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2. Experts Say This Is Real Difference Between Vitamin D and D3

   www.aol.com/experts-real-difference-between...

   SCIENCE PHOTO LIBRARY - Getty Images. When it comes to the sunshine vitamin, most of us could use a boost. ... Vitamin D3 needs for the average adult between the ages 19 and 70 years old is 600 IU ...

3. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   While some studies have found that vitamin D 3 raises 25(OH)D blood levels faster and remains active in the body longer, [44] [45] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [46] [47] If digestive disorders compromise absorption, then intramuscular injection of up to ...

4. Cholecalciferol - Wikipedia

   en.wikipedia.org/wiki/Cholecalciferol

   The Institute of Medicine in 2010 recommended a maximum uptake of vitamin D of 4000 IU/d, finding that the dose for lowest observed adverse effect level is 40,000 IU daily for at least 12 weeks, [25] and that there was a single case of toxicity above 10 000 IU after more than seven years of daily intake; this case of toxicity occurred in ...

5. Are your vitamin D levels low? An expert shares some ... - AOL

   www.aol.com/lifestyle/vitamin-d-levels-low...

   The amount of vitamin D needed each day varies from person to person. However, the daily recommended dose to sustain vitamin D levels is 10 micrograms (mcg) for infants and 15 mcg for ages 1 ...

6. File:Cholecalciferol.svg - Wikipedia

   en.wikipedia.org/wiki/File:Cholecalciferol.svg

   Date/Time Thumbnail Dimensions User Comment; current: 17:33, 13 February 2013: 512 × 546 (21 KB): Edgar181: tweaked stereochemistry for preferred representation of adjacent stereocenters (stereobonds both to and from a single stereocenter are ambiguous)

7. 7-Dehydrocholesterol - Wikipedia

   en.wikipedia.org/wiki/7-Dehydrocholesterol

   7-Dehydrocholesterol (7-DHC) is a zoosterol that functions in the serum as a cholesterol precursor, and is photochemically converted to vitamin D 3 in the skin, therefore functioning as provitamin-D 3. The presence of this compound in human skin enables humans to manufacture vitamin D 3 (cholecalciferol).

8. Have You Been Taking Your Vitamin D the Right Way? - AOL

   www.aol.com/exact-time-vitamin-d-140000773.html

   The Exact Right Time to Take Your Vitamin D PeopleImages - Getty Images ... The best vitamin D supplements. Both vitamin D2 and D3 are good, but “D3 has better bioavailablilty,” says Dr ...

9. When Is the Best Time to Take Your Vitamin D? - AOL

   www.aol.com/best-time-vitamin-d-192000191.html

   There are two sources of vitamin D: Vitamin D2 comes from fortified foods and mushrooms, while vitamin D3 is produced in the skin when exposed to sunlight (which is why it’s often known as the ...