These injections bypass the digestive system and deliver the vitamin directly into your bloodstream, allowing for rapid correction of the deficiency and improvement in symptoms like fatigue
doi:10.1038/sj.ijo.0801740
Unlike oral B12, which depends on intrinsic factor and healthy gut absorption, the injection delivers B12 directly into the bloodstream
[DOI] [PMC free article] [PubMed] [Google Scholar] 191.Turinsky J, OSullivan DM, Bayly BP
Vitamin B12 injections have surged in popularity due to widespread med spa marketing and wellness influencer promotion, but genuine B12 deficiency remains a real and often underdiagnosed condition particularly among older adults
For people with a B12 deficiency, injections are often prescribed because they allow for better absorption than oral supplements