Reading through the posts I still do not understand that if b12 Injected stays in your system for so long why are they needed so often ? Also when I stop the every other day it seems such a big jump to wait 2 months? I gather so many have a problem with GPS that I'm worried now to ask to give from every other day to a week and so on so as to monitor what frequency will work for me in the future. There was a post about your body regulating the B12 in your blood so that if you don't do it properly the levels will drop very quickey.
The guidelines do say though every other day then every 2 months with nothing in between?