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But a monthly 4000 mcg dose would be 4 mL, with the same concentration
There are other arguments I can make
Here are several factors that can affect your absorption and cause or contribute to B12 deficiency during perimenopause and menopause: Age: The problem is that as we get older, our ability to absorb B12 from food decreases, so the deficiency of B12 risk increases
[1] If the solution is drawn into a syringe for injection, it should be administered promptly for the same reason (avoid leaving the filled syringe exposed to light for long)
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