how inject my self vitamin b12 Injections at Home - Safety Guide for Self-Administration Best Vitamin B12 Injection Sites:
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About 20% of patients with iron deficiency anemia without an obvious cause have evidence of pernicious anemia/AAG (low B12, positive anti-parietal cell/IF antibodies, and/or gastric biopsy)

reactions persisting beyond 48 hours or involving induration suggest sensitivity to the bacteriostatic water preservative (benzyl alcohol) rather than the peptide itself

106.Chini C et al
do not freeze the mixed solution

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