hi I find it very easy to reach either arm but admit people do ask me that,I cant see why it would be a problem I just sit on end of bed with stuff all laid out on a clean towel and sharps bin handy,draw up b12 with a red filter needle,personal preference here,then discard and do the injecting with the orange needle , if the b12 is cold or you do have a bead of it on injecting needle then yes your right it can sting but again that is a rarity for me
Its often called The Forgotten Disease
Aim for adequate water intake throughout the day, with particular attention to morning hydration before fasting injection
I was found to have "ventricular ectopics" - which, although I had 4,000 episodes in that period, was not dangerous and went away eventually a few months later without needing treatment
2011 Aug;94(8):4016-27
For ethical reasons, a placebo controlled trial would not be appropriate [36]