What is Vitamin D3 derived from? Is it from an animal source? Is there a synthetic form?
Natural Vitamin D can be found in small amounts in a few foods, including fatty fish such as herring, mackerel, sardines and tuna. But most vitamin D – 80% to 90% of what the body gets – is obtained through exposure to sunlight.
Vitamin D can also be made in the laboratory as medicine.
The term "Vitamin D" refers to several different forms.
The two forms important in humans are : ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3). Both are available as synthetic (man made) supplements.
Vitamin D3 is the preferred supplement because of better absorption.
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