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After initial correction, some individuals may require ongoing maintenance injections (often monthly) if they cannot adequately absorb B12 from diet or oral supplements
Some individuals notice improved energy and focus within a few days
If b12 comes back low, add supplementation
This is the single habit that makes the 28-day rule usable
You can see an example below: Subcutaneous needles are insulin syringes and the length of the need varies from 6mm to 12mm which is less than 1 cm
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