where should i inject b12 shot Injections at Home - Safety Guide for Self-Administration Vitamin B12 Injection Sites: All

Regular monitoring ensures B12 levels remain within the therapeutic range whilst minimising potential adverse effects

The Army gave me that

it's a human truth, really

Its ideal for busy individuals who want to see results without a lengthy downtime

[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations

For a quick summary of common shot side effects see this guide: B12 shot side effects