Injections are advised to circumvent potential absorption challenges in the gastrointestinal tract, particularly for those with known issues like Crohn's disease or irritable bowel syndrome, providing a more immediate replenishment compared to oral supplements, which may not be fully absorbed
Many conditions cause similar symptoms, and inappropriate supplementation may mask underlying diagnoses whilst providing no benefit
Blood markers may change before nerve symptoms improve, and long-standing neurologic symptoms may take longer to assess
[13] [14] also myelosis funicularis , [15] or funicular myelosis
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10.3390/biomedicines9060674 [DOI] [PMC free article] [PubMed] [Google Scholar] 78.Fernndez-Araque A, Verde Z, Torres-Ortega C, Sainz-Gil M, Velasco-Gonzalez V, Gonzlez-Bernal JJ, Mielgo-Ayuso J