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The most consequential decision in any stacking protocol isn't which compounds to combine
They are effective and cause minimal side effects
If youre noticing grey hairs appearing earlier than expected, alongside other B12 deficiency symptoms, its worth investigating your B12 status
When you know your medication has been stored correctly, you can trust that any changes in effectiveness are due to biological factors rather than degraded medication
Moreover, certain medications commonly prescribed to older individuals, such as metformin and proton pump inhibitors, may hinder B12 absorption
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