why do i feel worse after my b12 injection why do i feel worse

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Distinct from classical GH signaling (experimental): Research suggests minimal stimulation of IGF-1 and limited activation of pathways typically driven by full-length growth hormone

The AAFPs evidence-based clinical review states directly: Oral administration of high-dose vitamin B12 (1 to 2 mg daily) is as effective as intramuscular administration for correcting anemia and neurologic symptoms in patients with B12 deficiency (Langan RC, Goodbred AJ, American Family Physician, 2017)

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