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JCI Insight (2023)

Its defined molecular composition makes it suitable for experimental research protocols, in-vitro investigations, and analytical applications carried out within scientific research environments

Rayyan software (Ouzzani et al., 2016) was employed for reference management, including the identification and removal of duplicate entries

The peptide is also a clinically proven and FDA-approved treatment

In short: B12 shots are used because they deliver vitamin B12 faster, more reliably, and more efficiently than oral supplements, especially if you have an absorption issue

doi: 10.1016/s0195-6663(95)80004-2