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B12 is typically injected into the muscle for better absorption, and the process only takes a few minutes
The main source of vitamin B12 is your diet
[102] Drug interactions [edit] H 2 -receptor antagonists and proton-pump inhibitors Gastric acid is needed to release vitamin B 12 from protein for absorption
Cyanocobalamin Drugs BNF
Patients should maintain realistic expectations and continue treatment as prescribed, even if immediate improvements are not apparent, as premature discontinuation can lead to symptom recurrence
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