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B12 helps convert food into energy, enhancing metabolism
The one real argument for injecting is bypassing first-pass metabolism, and the strength of that argument depends entirely on which bioavailability study you believe (3.5% in mice versus 38.4% in rats)
You should always double-checkthat you have the correct medication and dose prepared
Without it, metabolism can slow down, leading to energy depletion and fatigue
Slower preservative degradation
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