how will i feel after my first b12 injection Why do worse a injection? How Quickly Do You Feel

But there is no established upper limit for vitamin B12 due to its low potential for toxicity

(jofem.org) The best-case signal: modest weight loss in a shorter trial A frequently cited 12-week randomized trial result (as summarized in reviews) reported: ~2.6 kg average loss with AOD-9604 1 mg/day vs ~0.8 kg with placebo (PMC) This is the kind of result that can be statistically meaningful, clinically modest, and very sensitive to study design (diet, activity, baseline metabolic status, adherence)

References Heffernan, M., Summers, R.J., Thorburn, A., Ogru, E., Gianello, R., Jiang, W.J., & Ng, F.M

Will a Vitamin B12 injection interfere with my medications