If you use insulin needles for subcutaneous injection of the B12, it won't hurt nearly as badly. It absorbs more slowly done this way, but if the pain is too much from the intramuscular injection, I figure it is worth the slower absorption to avoid the severe pain. Before I had the PICC line, I was getting my injections subcutaneously using the insulin needles (I also have very little body
fat due to chronic malnutrition, so it is possible I'm getting some of the B12 in my muscles at times...).
CajunGrl & Saxmar,
I've never had red urine from B12 shots, but have always felt a difference when getting them vs. not getting them...maybe I just haven't had a high enough dose to color my urine...