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Rapid Correction of Deficiency : Injections can quickly fix a B12 deficiency, which is great for those with severe issues
You can find more technical data on Nature.com regarding peptide signaling
Oral bioavailability of NAD+ and its precursors is poor, which is why supplements at the wellness shop are mostly a waste of money
Depending on your condition, you may need to get a B12 injection every few weeks until your deficiency is gone
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