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For example, if you ate the following, you would consume more than double your daily B12 needs: However, if you have any issues that interfere with vitamin B12 intake or absorption, you may want to consider taking a supplement
Why standard dosing ranges exist The 300-500mcg daily range did not appear arbitrarily

Loens et al

10.1056/NEJM196704272761707 100 EberhardsonM.PattersonS.GrapengiesserE
