Mini glucagon is when you mix up the glucagon the way the instructions say to, then use an insulin syringe to take out a smaller amount of glucagon. A mini glucagon injection is appropriate for somebody who is having a low that can't be treated orally, but who you know went low recently or is seizing or somewhat conscious. The bigger needle, regular dose, is needed if there is a reasonable chance that circulation is very restricted- then you really want the glucagon to go into muscle and not fat. I tell my parents if they find me in the morning and I won't wake up, go for the full dose. If I was giving myself glucagon because my stomach really hurt and I couldn't stand eating and my blood sugar was 25 or something, I would just use a mini glucagon.