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Some individuals are more likely to benefit from B12 injections, especially if they: Follow a vegan or vegetarian diet Experience digestive or absorption disorders (e.g., Crohns, IBS, low stomach acid) Are aging adults , as natural absorption declines with age Take medications that interfere with B12 levels, such as metformin or acid reducers How Often Are Injections Needed
Progress monitoring
Dosing/Settings Oral: 50-100mg/day
PMID: 34377956
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