Unverified83% confidenceCautionTime unknown
老年患者、有冠心病或心律失常者，医生通常从小剂量（如12.5-25μg）起始并缓慢加量，以免诱发心绞痛或房颤；此类患者切勿因'见效慢'自行加量
1
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83%
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Long-term
Relevance
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Unverified长期少量服用比短期大量更安全有效，成人西洋参每日建议3-6g、红参3-9g；过量服用可能出现'人参滥用综合征'（失眠、血压升高、烦躁）72% similarUnverified长期服药慢病人群（高血压/糖尿病等）选择7天x3-4格（早中晚睡前）的周分药盒，单纯每日一次用药选7天x1格即可，避免格数过多造成漏格误判70% similarUnverified日常保健100mg/天足够；心血管辅助或运动人群200mg；充血性心衰等治疗性需求需300mg以上并遵医嘱，不建议自行长期高剂量68% similarUnverified无缺乏的健康成人日常维持推荐1000-2000IU/天；血清25-OH-D＜20ng/ml（缺乏）需在医生指导下短期用5000IU/天纠正，纠正后回落到维持量，不宜长期高剂量68% similarUnverified剂量越大越有效但耐受性越差：临床有效量常需10-20g/日，而高剂量易引发胀气腹泻，实际应从小剂量爬坡而非一步到位追求足量68% similar
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