Thanks!
Our son's doctor used to prescribe them for him. (He has autism and b12 injections have supposedly helped many ASD kids, but not ours.) Here is a link to his VERY SPECIFIC directions on how to administer the shots.
http://www.drneubrander.com/Files/READ%20ME,%20Injection%20Instructions%20for%20Methyl-B12%20Shots.pdf