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

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   Vitamin D2 vs. D3 Uses. Both vitamin D2 and vitamin D3 will help to increase vitamin D levels in the blood, says Pelitera. However, some studies have shown that supplementing vitamin D3 does a ...

3. Cholecalciferol - Wikipedia

   en.wikipedia.org/wiki/Cholecalciferol

   [9] [10] Vitamin-D supplements may not be effective in people with severe kidney disease. [11] [10] Excessive doses in humans can result in vomiting, constipation, muscle weakness, and confusion. [5] Other risks include kidney stones. [11] Doses greater than 40 000 IU (1000 μg) per day are generally required before high blood calcium occurs. [12]

4. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   Vitamin D 3 (cholecalciferol) is produced industrially by exposing 7-dehydrocholesterol to UVB and UVC light, followed by purification. The 7-dehydrocholesterol is sourced as an extraction from lanolin, a waxy skin secretion in sheep's wool. [194] Vitamin D 2 (ergocalciferol) is produced in a similar way using ergosterol from yeast as a ...

5. Vitamin D toxicity - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_toxicity

   Vitamin D compounds, specifically cholecalciferol (D3) and ergocalciferol (D2), are used in rodenticides due to their ability to induce hypercalcemia, a condition characterized by elevated calcium levels in the blood. This overdose leads to organ failure and is pharmacologically similar to vitamin D's toxic effects in humans.

6. Vitamin D2 vs. D3? Are artificial sweeteners bad? Readers ...

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7. Calcifediol - Wikipedia

   en.wikipedia.org/wiki/Calcifediol

   Calcifediol is the precursor for calcitriol, the active form of vitamin D. [3] [4] It is synthesized in the liver, by hydroxylation of cholecalciferol (vitamin D 3) at the 25-position. [3] This enzymatic 25-hydroxylase reaction is mostly due to the actions of CYP2R1 , present in microsomes , although other enzymes such as mitochondrial CYP27A1 ...