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Other Causes of B12 Deficiency (Non-Autoimmune) Dietary insufficiency (e.g., strict vegan or vegetarian diets without supplementation)
Seek medical advice if symptoms do not improve, become worse, return, or if new symptoms develop
[24] Cyanocobalamin is one of the most widely manufactured vitamers in the vitamin B 12 family (the family of chemicals that function as B 12 when put into the body), because cyanocobalamin is the most air-stable of the B 12 forms, [25] and is the easiest to purify after it is produced by bacterial fermentation
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