250mg-300mg NMN是临床研究中较多采用的剂量，数据显示每日口服100mg NMN、600mg NMN、900mg NMN、2000mg NMN几种剂量均安全。

临床研究显示，服用NMN出现最多的周期为8-12周，最长服用周期为24周，服用人群出现最多的为40-80岁区间 。

借鉴个人信息：

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[2] Covarrubias, A. J., Perrone, R., Grozio, A., & Verdin, E. (2021). NAD+ metabolism and its roles in cellular processes during ageing. Nature reviews. Molecular cell biology, 22(2), 119–141. //doi.org/10.1038/s41580-020-00313-x

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