An injection bypasses that route
If youre experiencing symptoms of B12 deficiency, your doctor may order a blood test
Results vary, but many people report more energy, better focus, and improved mood after just a few treatments

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Increased energy, better focus, improved mood, and more restful sleep are common signs
Oral supplements (tablets or lozenges): Oral B12 must pass through the stomach and requires a protein called intrinsic factor to be absorbed