--are you taking any oral supplemental B12?

The responses to your first post provide much evidence that this would be as effective as B12 shots, as long as you are megadosing--at least 1000mcg (1 mg) doses taken seperately from other meds and supplements. This would be a better way to keep a constant high level of B12 in your body tissue.

Many of us use sublingual tablets that allow passive absorption, and these are avialable from numerous stores and Internet sites. Many of us have a preference for the methylcobalamin form of B12 (as opposed to the more commonly produced commercial cyanocobalamin), as that from has to jump through fewer metabolic hoops to be used by the body (and the B12 molecule is easy to interfere with, so the fewer hoops the better).