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Q.

Is all vitamin D the same?

Related Topics: Vitamin D
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Answers From Experts & Organizations (1)

Jane Harrison-Hohner, RN, RNPJane Harrison-Hohner, RN, RNPSUCCESS!
Jane Harrison-Hohner, RN, RNP
Women's Health
89 Answers
2,787 Helpful Votes
35 Followers
A.

Vitamin D from sunlight, foods, and even vitamin supplements is not biologically active. It has to undergo two processes, the first occurring in the liver which converts vitamin D to the 25(OH)D form, also known as calcidiol or vitamin D². The kidney then makes the most active form 1,25(OH)²D, also known as calcitriol or vitamin D³.

If you check your bottle of vitamins, or calcium + vitamin D supplements, you can see which type you have been taking. Currently, the preferred supplement form may be vitamin D³ as it increases the amount of active vitamin D while increasing the time vitamin D is active in the blood and tissues.

This answer should not be considered medical advice...down arrowThis answer should not be considered medical advice and should not take the place of a doctor’s visit. Please see the bottom of the page for more information or visit our Terms and Conditions.up arrow

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