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This mode of administration is explained by the fact that the 2 main etiologies of vitamin B12 deficiencies were historically the pernicious anemia and the malabsorption, in particular following gastrectomy for stomach ulcer [11]
Serious side effects are rare but can include allergic reactions (rash, swelling, difficulty breathing) or, in very specific cases of severe anemia treatment, low potassium levels
PTFE, polytetrafluoroethylene
oral vitamin B12 replacement When offering oral vitamin B 12 replacement to people with vitamin B 12 deficiency caused, or suspected to be caused, by malabsorption, prescribe a dosage of at least 1 mg a day
The home kit is very easy to use and the helpful videos provided online were great
Furthermore, the risk of an allergic reaction is typically lower with oral supplements than with injections
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