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It could point to several things: A different cause: your fatigue might stem from thyroid problems, iron deficiency, or sleep apnea rather than B12
If you're struggling with fatigue and suspect a B12 deficiency, consider reaching out to a healthcare provider to explore whether B12 injections are right for you
Physical signs
Non-Responders (5-15% of users): See minimal or no improvement despite consistent dosing
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