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Some symptoms may not show up for a few years until the deficiency worsens and affects other parts of your body

Individuals at higher risk include older adults with reduced stomach acid production, people with gastrointestinal conditions affecting absorption, strict vegans, and those taking medications like metformin or proton pump inhibitors

It depends on your baseline levels, your symptoms, and what your body is trying to accomplish

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Condensation Reaction Intermediate 2 condenses with 2-naphthaldehyde in ethanol, and the resulting product is filtered to obtain Intermediate 3 (the hydrazone intermediate)