I have tried and tried with the hydroxacolabamin and everytime no matter the frequency I would improve then the efficacy would gradually wear off so would deteriorate again. Over a two year period I ended up on injecting twice daily which seemed ludicrous but that too started to fail for me.
So finally decided to trial methylcolabamim. I decided I would inject alternate days, injecting hydroxacolabamin on the other day. Im pleased to say the methylcolabamin made a big difference and I noticed an improvement -bowel incontinence much better, numbness in feet much reduced. However Ive found methylcolabamin strong so now injecting every third day. Recently experience tummy upset diarrhoea so am stopping the hydroxacobalamin injections as am probably overloaded. I know this is very unusual but would appreciate any comments from others in simular situation who have found a way forward. My methyl vials come in individual seal units so totally protected from light. Ive found out Japan use methylcolabamin as their main treatment for b12 deficiency/PA. they dont use Hydroxacolabamin. i take Thornes basic b daily.