Up until a few decades ago most vitamins added to Where Do Supplemental Vitamins Come from in General? Extraction I should that it assumes you’re not using animal products. For those who are in a rush, have a look at the flowchart here: To have a better idea of whether your vitamin D is vegan-friendly, you’ll want to continue reading. Unfortunately, the synthesis of much of the vitamin D used in supplements and fortified foods relies on 7-dehydrocholesterol (the precursor) derived from sheep oil. Whether a certain source of vitamin D3 qualifies as vegan depends on how it is synthesized. To know for sure, you will have to reach out to the manufacturer, or look for products bearing the vegan label.
Vitamin D3 in supplements and fortified foods is rarely vegan, as it’s usually obtained from wool fat. Vitamin D3 occurring naturally in food never is. This can get confusing as there are two types of vitamin D (check out the article here)-vitamins D2 (ergocalciferol) and D3 (cholecalciferol) both of which can be found in food and supplements.
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