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What is the difference between vitamin D2 and D3?

April 26, 2017d2 D3 difference vitamin

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What is the difference between vitamin D2 and D3?

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D-2 (ergocalciferol) is derived from yeast, while D-3 (cholecalciferol) is derived from lanolin (from sheep) or fish. D-2 and D-3 are both used to fortify milk and other dairy products. Some D-3 vitamin supplements are made with fish oil.