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For those who have trouble absorbing Vitamin B12 from diet or supplements, long-term injections may be required

Single-use is strict but necessary in medical care

[DOI] [PMC free article] [PubMed] [Google Scholar] 193.Alsharif F., Almuhtadi Y

Maternal and Neonatal Health Antenatal supplementation with B complex during pregnancy led to higher vitamin B12 levels and lower homocysteine in newborns, indicating that B complex supplementation can improve neonatal B12 status, especially in populations at risk for deficiency
