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Those who follow a vegetarian or vegan diet are more likely to be deficient as Vitamin B12 is mainly found in animal-based products
1,2 Although not clinically validated or available for widespread use, measurement of holotranscobalamin, the metabolically active form of vitamin B 12 , is an emerging method of detecting deficiency
Widmark (1932)
If you're taking it as part of a multivitamin like Building Blocks, morning with breakfast is the simplest approach
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