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Description
Unless the released fatty acids are actually oxidized which requires an energy demand the body is not otherwise meeting they are re-esterified and re-stored

Starting with a modest dose to gauge bodily responses is prudent

Each persons unique health profile and ability to metabolize, utilize, and excrete B12 injected into the body differs

NPJ Aging Mech
How Quickly Do B12 Shots Work

If your levels were very low, it can take a few weeks to feel back to normal
