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A suitable oral regimen can replace vitamin B12 for many people, including some people with diet-related deficiency and some people for whom high-dose oral treatment is chosen despite suspected malabsorption
Rayyana web and Mobile app for systematic reviews
B12 requirements increase during both stages
Symptoms requiring immediate medical attention include difficulty breathing, facial swelling, or widespread urticaria
Should the pain stick around or get worse, ask your doctor for advice
Discomfort is minimal and resolves within seconds
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