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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. ... and supplements, whereas vitamin D3 is found in animal-based foods ...
Vitamin D is essential for bone health and immune function, and deficiency is common. Consoider one of these vitamin D supplements if you're not getting enough.
The body produces vitamin D3, which is converted into active vitamin D. Getting five to 30 minutes of UV exposure midday at least a few times a week is thought to be enough to maintain sufficient ...
[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]
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. [203] Vitamin D 2 (ergocalciferol) is produced in a similar way using ergosterol from yeast as a ...
Vitamin D (the inactive version) is mainly from two forms: vitamin D 3 and vitamin D 2. Vitamin D 3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D 3 supplements or fortified food sources. Vitamin D 2, or ergocalciferol, is obtained from D 2 supplements or fortified food sources. [3]