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Description
Experts explain these safety points in clinical guidance about B12 usage

Obesity Research, 8 (4), 314320

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The ideal frequency varies based on your individual needs

Vitamin B12 used to be prescribed by doctors as a tonic for people with a wide variety of complaints, especially those involving fatigue

Older adults : As we age, our bodies become less efficient at absorbing nutrients like B12, and deficiency is more common after age 60
