If it is due to the B12, it is probably because another nutrient is lacking. And if that is the case, the body is attempted to repair but doesn't have all of the tools. One possibility is vitamin E. I would make sure all nutrients are covered sensibly, multi, B complex, good E with gamma type, etc.

And of course anyone who is getting shots is likely to be getting cyanocobalamin. Since almost everyone, even with severe malabsorption of B12, does as well or better on daily doses of at least 1000 mcg, I would go with the oral methylcobalamin.

rose