Ah, auto-injectors, a curious piece of technology. I've always wondered how it is to actually use one since we had these in everyone's medkit in the German army, loaded with nerve agent antidotes. Just slam it on you leg and inject through the pants were the instructions... Kinda grisly, I guess it's less emotionally charged for a weight loss drug!
For drugs like these it isn't that different from a normal injection.
The pen has about 4 doses in it so you twist it to set your dose. You attach a needle tip to the pen and give yourself a poke, press an inject button on the top and a spring loaded ratchet system pumps in the dose amount you set (making a wonderful ticking noise as it progresses). Pull out and toss the needle and put it back in the fridge for next week.
I do manual injection which involves doing the full prep work. It takes about 3x as long to setup but is still only about a 3-5 minute process in total.
