b12 injections how to at Home - Safety Guide for Self-Administration B12 Injections | Vitamin B12

In any case, the potential for RLT to demonstrate greater efficacy compared to current standard treatments, while maintaining manageable toxicity, could support the recommendation of these novel approaches for patients [96]

Even then, these foods are often difficult for your body to break down and glean Vitamin B12 from

a combination of 1 mM IBMX, 1 M dexamethasone, and 10 g/ml of insulin in media were added to fully confluent 3T3-L1 fibroblasts for three days (days 0-3) to initiate differentiation

Its also worth being careful with expectations: if your B12 levels are already normal, injections are unlikely to be a meaningful energy boost