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Quality and regulation : Most oral B12 supplements are regulated as food supplements under food law, while injectable B12 and some oral preparations are licensed medicines regulated by the MHRA
B12 Deficiency: Causes, Symptoms & Treatment Vitamin B12 deficiency anaemia occurs when insufficient vitamin B12 (cobalamin) prevents the body from producing adequate healthy red blood cells
[54] Ovalocytes are also typically seen on the blood smear, and a pathognomonic feature of megaloblastic anemias (which include PA and others) is hypersegmented neutrophils
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[4] Scientific References Frequently Asked Questions Can vitamin B12 supplements cause stomach pain
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