feeling tired after b12 injections worse Injection: Answering concerns What feels like stress, laziness

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Does not meaningfully raise IGF1 and shows a placebolike safety profile in human studies

Been using for 3 wks

Insulin-like growth factor binding protein-2 (IGFBP-2) is a marker for the metabolic syndrome

Not having enough can cause serious problems like nerve damage and memory issues

This enzymatic reaction consumes both nicotinamide and SAM, leading to depletion of NAD+ storesa critical coenzyme required for cellular energy production, DNA repair, and metabolic regulation