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High-dose vitamin B12 supplements taken concurrently with the injection may lead to excessive B12 levels, though toxicity from vitamin B12 excess is extremely rare due to its water-soluble nature and efficient renal excretion
Appetite, 31(3), 367380
Oral B12 supplements can be a suitable choice if: - You have a mild deficiency or wish to prevent deficiency
In UK practice, monitoring is primarily based on clinical response rather than routine blood tests, as post-treatment serum B12 measurements can be misleadingly high and may not reflect tissue levels
doi: 10.1007/BF02087908
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