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Further reading & external resources Independent, third-party references on public scientific databases and registries

In the loading dose group, daily intranasal cobalamin administration led to a rapid rise in total serum vitamin B12 levels, increasing from a median of 230 to 1090 pmol/L within two weeks

Stomach acid and digestive enzymes can break it down, meaning only a fraction of the vitamin may actually enter your bloodstream

Individual Health Factors Your bodys response to Vitamin B12 depends on your health characteristics because these elements affect both its potency and speed of action

Sep 2004;1(4):24-29