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Ricardo V. Cohen

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Review Open access Sep 2026

Comparative efficacy of vitamin B12 supplementation routes in adults with replacement indication: a systematic review

Summary Background Vitamin B12 deficiency is common and often requires long-term supplementation to prevent serious complications, yet the comparative efficacy of the oral, sublingual, and intramuscular routes remains uncertain. This systematic review evaluated the efficacy of different vitamin B12 supplementation rout...

Daniela Debone, André Ferreira Azeredo da Silva, J. T. Cordenonssi et al. · 0 citations

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