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Understanding why this variability exists requires examining the mechanisms more closely
A 5mg dose requires 0.2mL (20 units on a U-100 insulin syringe)
Unfortunately, our bodies do not produce this vitamin naturally and with age it becomes harder to absorb it, resulting in B12 deficiency, which is very common and can lead to neurological difficulties and anemia
| Doctor Mike
Vitamin supplementation has been around for over a century
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