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Symptoms may include hives, difficulty breathing, and swelling of the face, lips, or tongue
For wellness purposes in non-deficient individuals, there is no universally agreed-upon schedule, and more frequent injections are not necessarily better
Elevated vitamin B12 (cobalamin) levels in the blood are often discovered incidentally during routine blood tests, as high B12 itself rarely causes direct symptoms
Vitamin B12 deficiency diagnosis and management
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