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Within 24 to 72 hours, many people report an increase in energy levels and a reduction in fatigue
Higher NAD+ levels and better mitochondrial function mean cells can respond more robustly to anabolic signals
Your body's ability to process and utilize vitamin B12 can be influenced by genetics, diet, and underlying health conditions
For example, one study found that after taking 1,000 mcg of oral vitamin B12, only about 1.3% (13 mcg) is absorbed into the bloodstream
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