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An oral product avoids injection-site pain, bruising and the low risk of anaphylaxis
In symptomatic B12 deficiency due to B12 malabsorption, parenteral administration of B12 is the default therapy
[1] For those on oral therapy, a repeat B12 level may be checked after several months to confirm response
optional extension to 16 weeks
Each peptide plays a specific role within the overall cycle
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