give myself b12 injections at Home - Safety Guide for Self-Administration B12 shots | Philadelphia, PA
Description
As the body only absorbs the B12 it needs, there is no risk of overdose

In both the UK and Ireland, injectable B12 is classified as a Prescription-Only Medicine (POM)

Always follow the instructions from your healthcare provider
B12 shots are directly administered into the blood, which works even better for those with various malabsorption disorders of differing natures

Other uses of cyanocobalamin include treating memory loss, fatigue, neurological disorders, depression, and fatigue associated with certain chronic conditions such as HIV and diabetes