I know I have read that damage from b12 deficiency can be permanent if not treated within 6 months. My question relates to a slightly different subject: how long did you get b12 shots before you felt like you stopped improving? How long should I expect to wait before I consider residual symptoms as permanent? Some people have told me a year, but I am not sure what that is based on? As for me, I experienced a large amount amount of improvement immediately after I started getting b12 injections, but now after a few months I don't see much further improvement. So is that it, I am stuck with my remaining symptoms? So I was just wondering if anyone would share their experience so we can compare anecdotes.
Also, a closely related question: After you started the b12 shots, did you experience exclusively improvement, or was it ever a "two steps forward, one step back" type of progression?