--I did give an extensive reply on the New Member Introductions thread you started:

http://neurotalk.psychcentral.com/thread148420.html

--which includes a link to our very extensive vitamin B12 thread here, which you'll find a the top of the forum page.

I'm sure others will comment soon, but I'm sure they'll say first, that your B12 level is way too low, and could account for a lot of symptoms; second, that you'll likely need supplementation for life, in fairly large doses (preferably of the already bodily-usable methylcobalamin form, in case you have any genetic malfunctions of methylation chemistry); and third, it's worth investigating why you are so deficient--do you have lac of intrinsic factor, have you had bariatric surgery, do you lose B12 due to another condition or due to prescription med effects, etc.

Nope no surgery. Just cut calories and worked out two hours a day. I have lost about 40 pounds over the last year. the last 6 months had been a battle. that is why I uped the work outs and the weight came off slowly. sometimes not at all. is the power form of Methylobalamin ok to use. with that work.

The Methyl-cobalamin form is more easily absorbed into the system, rather than the more usual cyanocobalamin found in most B complex and multivitamins.
You get more help per mcg.
Like vit 'C', B12 can be take in mega doses of 1000mcg (1mg) to 5000mcg (5mg) or more, daily and excess is passed off into the urine.
I don't think it is possible to OD on methyl-cobalamin, sublingual.