Key Takeaways Weight loss shots with B12 is a broad term covering pure B12 injections, MIC shots, Lipo-C shots, and other compounded formulas each with different evidence bases Pure B12 injections do not cause weight loss in people with normal B12 levels the clinical benefit in deficient patients is real but indirect MIC shots and lipotropic injections have weak clinical evidence the Obesity Medicine Association does not list them among evidence-based obesity treatments Always get a serum B12 blood test before booking clinic injections if your levels are normal, B12 shots will not change your weight MIC shots are not FDA-approved for weight loss and formulas vary significantly between clinics People on long-term metformin, vegans, post-bariatric surgery patients, and adults over 65 are at highest risk of genuine B12 deficiency and benefit most from injections For injection-based weight loss with robust clinical evidence, GLP-1 medications like semaglutide are the current standard of care References Green R, Allen LH, Bjorke-Monsen AL, et al

While these injections are generally safe for short-term use, healthcare providers must monitor patients for potential side effects that may develop over extended periods [1]
However, the manifestation of this relationship in the general population, as well as its underlying mechanisms, remains unclear
It affects how well they work and how safe they are