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Products from unregulated online vendors are not manufactured under pharmaceutical standards, may contain incorrect concentrations or be mislabeled, have no guarantee of sterility or freedom from contamination, are often produced overseas in facilities with unknown quality controls, and carry zero accountability if something goes wrong
Start: Begin around 200 mcg per day to gauge tolerability, then adjust as needed
But long-term human safety data is limited
If youre experiencing persistent fatigue, low energy, or brain fog that doesnt improve with rest, you might be dealing with a Vitamin B12 deficiency
This can vary quite a bit depending on where the clinic is located and if youre buying a one-off shot or a full course of injections
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