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2. 10 Best Vitamin D Supplements, According to Dietitians - AOL

   www.aol.com/10-best-vitamin-d-supplements...

   Each of these high-potency softgels delivers 5,000 IU of vitamin D3, making them a fantastic option for those looking to boost their vitamin D levels significantly. "With 125 percent of the ...

3. Looking For A Vitamin D Supp? Choose One With D3, Not D2 - AOL

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   Best vegan: Life Extension Vitamin D3 5,000 IU Softgels; If consuming vegan supplements is a priority, Bogden recommends this one, as it provides 5,000 IU of vitamin D3 with absolutely no animal ...

4. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin’s epidermis, triggered by a photochemical reaction with ...

5. Ergocalciferol - Wikipedia

   en.wikipedia.org/wiki/Ergocalciferol

   Ergocalciferol, also known as vitamin D 2 and nonspecifically calciferol, is a type of vitamin D found in food. It is used as a dietary supplement [ 3 ] to prevent and treat vitamin D deficiency [ 4 ] due to poor absorption by the intestines or liver disease . [ 5 ]

6. 24,25-Dihydroxycholecalciferol - Wikipedia

   en.wikipedia.org/wiki/24,25-Dihydroxycholecalciferol

   24,25-dihydroxyvitamin D 3 is formed from 25-hydroxyvitamin D 3 by the action of CYP24A1 (25-hydroxyvitamin D3-24-hydroxylase). CYP24A1 appears to be "a multicatalytic enzyme catalyzing most, if not all, of the reactions in the C-24/C-23 pathway of 25-OH-D 3 metabolism."

7. Looking For A Vitamin D Supp? Choose One With D3, Not D2 - AOL

   www.aol.com/lifestyle/looking-vitamin-d-supp...

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