Unverified80% confidenceTradeoffTime unknown
缓释型(sustained-release)维C将吸收时间延长至6-8小时,血浆浓度更平稳、尿液流失更少,适合需要全天维持者;但价格更高且部分研究显示缓释剂型的生物利用度略低于普通片剂
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Unverified缓释型(sustained-release)维C可维持血药浓度8-12小时,吸收利用率高于普通片剂一次性大剂量摄入(后者过量部分直接随尿排出),适合需要稳定补充的人群94% similarUnverified缓释剂型(time-release)可将维C释放时间延长至6-8小时,维持血药浓度更平稳,适合每天只服1次的人群;普通片剂吸收快但2-3小时即排出91% similarUnverified维C半衰期仅约30分钟,普通剂型血药浓度波动大,缓释剂型(Timed-Release/Slow-Release)能在6-8小时内持续释放,维持更平稳的血浆浓度,适合需要全天补充的人群89% similarUnverified缓释型维C(Time-Release)在4-6小时内持续释放,血药浓度更平稳、吸收率更高,适合需要全天补充或高剂量补充者;普通片剂大剂量时多余部分随尿排出89% similarUnverified缓释型(time-release)维C能延长血液维C停留时间、减少排泄浪费,适合一天只想吃一次的人;但普通即释型分两次早晚服用吸收效果同样好且更便宜87% similar
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