depression
"I took 3mgs of olanzapine every night for five years. This med worked like magic for a couple years, then I started having severe memory issues. This is when I found out the hard way, that quitting this medication without suffering is not possible.  So I decided to taper slowly over a period of 6 more months. Even then, after tapering to almost nothing before quitting completely, I had anxiety, liquid stools, confusion, and severe memory problems."