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B12 can be injected just under the skin (often in the abdomen) or into the muscle (usually the thigh)
Animal studies with thymosin beta, a multifunctional tissue repair and regeneration peptide
Oral methylcobalamin gets converted into adenosylcobalamin, and regenerates some of the methylcobalamin
If your B12 levels are normal, there is no evidence that supplements will further boost your energy
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