b12 injections wiki How to Give a Injection: Step-By-Step Instructions Hydroxocobalamin - Wikipedia

Interestingly, most people are deficient in vitamin B12, especially vegetarians or vegans, and persons with specific diseases

Frequently Asked Questions about Vitamin B12 Injections Do B12 injections hurt

The realistic caveat is that long-term maintenance without pharmacologic or procedural support is difficult for most people which is the entire reason the rest of this list exists

For SQ injections, it also depends on where your body tends to carry more fat

Excessive supplementation is generally unnecessary and may cause mild side effects such as flushing or irritation at the injection site

Following recommended schedules helps avoid overuse.