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Standard protocols call for 200-300 mcg twice daily, typically administered subcutaneously near the area of interest
Some patients notice more energy in a few days
If your B12 deficiency is severe, it could take 4-6 weeks of injections before you really start to turn the corner and feel like your old self again
It is the largest and most structurally complex vitamin, and the only one to contain a metal ion, cobalt
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