Unverified75% confidenceTradeoffTime unknown
B族维生素为水溶性,服用后1-2小时内血药浓度达峰随即经尿排出,缓释(time-release)剂型可延长吸收窗口,适合需要稳定供给的高压/慢病人群
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75%
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Long-term
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Unverified缓释型(Time-Release)维生素C能延长血浆浓度维持时间,单次摄入500mg以上时吸收率优于普通片剂;普通剂型单次超过200mg后吸收率开始明显下降,多余部分经尿液排出83% similarUnverified维生素C日剂量建议200-500mg即可饱和血浆浓度,单片VC>1000mg的产品超出吸收上限,多余部分随尿排出,属营销噱头78% similarUnverified分次服用(如早晚各半)比每日一粒更能维持水溶性B族的血药浓度,因B族数小时内即随尿排出,但依从性下降;日常保健追求便利可选每日一粒缓释型平衡两者76% similarUnverified每日两粒分次服用的设计有利于水溶性维生素的持续吸收,但需要用户有中午或晚间二次服药的习惯,依从性要求高于一日一粒产品75% similar
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