Help. I already posted a msg and now can't find it. slow learner due to b12 level of 68. Been 3 weeks since diagnosis. Improvement on cyan 1000cmg for two weeks. Switched to methyl 1000-2000 daily and after 10 days symptoms which had improved are returning. I feel much worse. Is it possible that the b12 type switch has caused this or is it typical three steps forward two steps back type of thing. I actually had my typing ability back for a week and now I'm like a slug again. Any input would be very much appreciated. Plan on switching back to cyanocobalamin tomorrow because I just don't know what else to do. anyone ever hear of something crazy like this? Distressed and discouraged, Nancy