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Description
One source says 250mcg
doi: 10.1002/cam4.3345 165 MukamaTSrourBJohnsonTKatzkeVKaaksR
Epub 2003 May 18
Nature Communications, 11(1)
Vegetarians and Vegans: Since Vitamin B12 is primarily found in animal products, individuals who follow plant-based diets may be at risk of deficiency and should consider supplementation
