Welcome to NeuroTalk:

I'd like to suggest you get tested for B12 levels. And don't accept "normal" from the doctor, as lab ranges are out of date and very low. People can have significant neurological symptoms (and not show anemia) at low levels of 200 today. The new low protocol is now 400pg/ml.

Here is a video explaining showing people who fell thru the medical cracks and suffered greatly...each with different impairments:
http://www.youtube.com/watch?v=BvEiz...ature=youtu.be

This is my B12 information thread:
http://neurotalk.psychcentral.com/thread85103.html

It explains with medical links, how to supplement successfully orally once you have your test results in numbers in hand.
Why using methylcobalamin is best and how to take it properly so it will be absorbed and work.

Some low B12 issues are inherited. Either damaged or poorly functioning intrinsic factor or errors in methylation called MTHFR polymorphisms. The latter fail to methylate (activate) folic acid and cobalamin from vitamins and food.
The video does not go into these details, and only mentions this briefly.

New statistics suggest up to 40% of Americans can be low in B12. That is a pretty horrifying number!