[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

B12单独补充有效剂量:口服吸收率低,普通人维持量需每日250-500μg,纠正缺乏需1000μg,舌下含服型比普通吞服型吸收更好,适合胃酸不足或萎缩性胃炎者

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80%
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Long-term
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