Hi Summer3,
I use Hydroxocobalamine 10mg/2ml - they're packed in ampoules of 2 ml - I draw them up in 2 ml seringes with a large needle, and then I change to a thin needle for injection (subcutane). I use half of it (1ml) per day (After the first half I put the thick needle on it, and wrap the seringe in it's cover and put it in a clean place, and then I put a fresh thin injecting needle on it the next day).
Have you tried diabetes needles, they're really thin, so the 'residu' is almost nothing?
It helps tremendously for me. I've been using less for the lasts months, cause I took them for about 2 years daily - I felt I didn't need them anymore, but I've started again a little while ago, because I was feeling so bad. Since B12 is crucial for nerve health + we have damaged nerves...
Oh and: Happy New Year!