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The ingredients are usually safe in recommended amounts but avoid high doses unless your doctor advises otherwise
The shelf life of vitamins varies depending on their formulation and storage conditions
Your provider will set the schedule at your consultation
However, older people are also in greater need of B12 due to its role in red blood cell production, cognitive function, homocysteine metabolism, myelin synthesis, and immune health
Look out for signs like tiredness, weakness, or nerve problems
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