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2018;31((Suppl
Intrinsic factor is like a taxicab that transports B12 from the stomach to the part of the bowel where its absorbed, Swenor says
Dosing & Reconstitution Guide Subcutaneous, once weekly Standard / Gradual Approach (2 mL = 5.0 mg/mL) Frequency: Inject once weekly subcutaneously on the same day each week [1] [5]
Severe loss of quality of life, due to symptoms such as debilitating fatigue, insomnia (B12 is required for synthesis of melatonin), mental illness, and neurological symptoms
But that's only part of the story