b12 injections at home for humans Shots Home: How, Where & How Often to Inject Yourself How To Give Yourself Vitamin
Description
Those who follow a vegetarian or vegan diet may be at risk for B12 deficiency, as this vitamin is primarily found in animal products

The skin may be stretched or pinched to facilitate easier insertion, depending on the site and muscle mass
In practice that is usually 1 to 1.5 inches for an adult
Its effects tend to diminish after 46 weeks of daily use, so strategic breaks are essential to reset the bodys responsiveness and restore its full effectiveness

Nucleic Acids Res