This suggests to me that the recovery you have experienced isn't strongly resilient; meaning that though you feel like you are %100 that you can quickly and easily be knocked off tract.
This is kind of a bummer since I imagined this might be the case. I'm really hoping for a full recovery, to the point of having never taken the stuff but I'm guessing that is just wishful thinking.
Have you ever gone an extended period of time without supplements to see where things are naturally?