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2. 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, [43] [44] others contend that vitamin D 2 sources are equally bioavailable and effective for raising and sustaining 25(OH)D. [45] [46] If digestive disorders compromise absorption, then intramuscular injection of up to ...

3. Popular vitamin won’t prevent a fall or fracture in older ...

   www.aol.com/news/popular-vitamin-won-t-prevent...

   Taking vitamin D supplements did not result in a “significantly lower risk” of fractures among middle-age and older adults in one study published in 2022 in the New England Journal of Medicine.

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

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

   Both vitamin D and D3 have their own health benefits. Experts explain the different qualities of the two vitamins. ... Vitamin D3 needs for the average adult between the ages 19 and 70 years old ...

5. Vitamin D and neurology - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_and_neurology

   One common active form is 1,25-dihydroxyvitamin D. [4] The term vitamin D in this article means cholecalciferol, ergocalciferol, 25-hydroxyvitamin D, and the active forms. The role of vitamin D is best characterized as enabling calcium absorption and regulating calcium homeostasis. Vitamin D also play a role in phosphate absorption. [5]

6. 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 ...

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

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

   Vitamin D is a fat soluble vitamin, so it's important to know the best time of day to take it. ... The upper limit per day for everyone over 9 years old is 4000 IUs, unless you’ve been screened ...