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Do not rinse out
Typical review language: "By day 3 I could actually get through my afternoon without crashing," "First time in months I didn't need a 2 PM coffee," "The brain fog lifted completely." 2
Early research focused primarily on metabolic regulation
Key Takeaways Vitamin B12 is used to prevent or treat low B12 levels and related symptoms when intake or absorption is inadequate
However, some people can still become low in B12 because of diet, absorption problems, certain medical conditions, medicines, surgery or long-term health factors
Drug interactions with vitamin C
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