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Overall, the benefits of correcting a vitamin B12 deficiency far outweigh the small risk of side effects, and the injection is considered a safe and effective method for restoring optimal B12 levels

Although this review provides a comprehensive analysis of the existing literature on the topic, there are several limitations that must be acknowledged

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[DOI] [PubMed] [Google Scholar] The Safety and Efficacy Study of RiaGev in Healthy Adults [WWW Document], n.d

the Special Research Assistant Project of Chinese Academy of Sciences (to YW)