Will also add that practitioners tend to be woefully undereducated on B12 (just like ME). It requires a lot of self management unfortunately. And potentially sourcing the shots on your own if they won’t prescribe an adequate amount. I had to order ampoules off German Amazon.

That’s right. I found the B12 deficiency subreddit helpful to understand the situation and the other things you should be supplementing alongside injections.

Are you aware of “reversing out” — common with B12 deficiency. I didn’t experience side effects with injections, but it can also be a result of the type of formulation, especially if it’s methylated. You can try other versions (cyano, Hydroxy, etc).