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Pre-filling syringes reduces effective dose by 58% over 24 hours due to peptide adhesion to syringe walls, which compounds across multi-day protocols and undermines dosing consistency

For severe cases, this process may take longer

A deficiency can lead to megaloblastic anemia, which can cause weakness, fatigue, and pale skin

Figure 1: B 12 Test Result Review and Process Algorithm for Patients with Risk Factor for B 12 Deficiency* and/or Non-specific** or Specific Symptom of B 12 Deficiency TOP Management Treatment In suspected B 12 deficiency, supplement both B 12 and folate

The patient should be questioned closely about any symptoms from previous doses to prevent severe reactions

What medications should not be taken with vitamin B12