I was thinking about that, too. Do people's med regimens ever get settled? I am trying to amass some data, and what seems to emerge is the following:

Lithium, if it works, will work. You have to monitor for toxicity, etc., but if it works now, it will work in the future.

APs, same way.

Benzos can and do give out. It is better not to depend on them.

AD's can poop out. I am hopeful that my Prozac won't, because what it is doing is a sheer miracle, and at such a low dose!