I take 1 mg ativan every day, for a very long time, and I also take lithium, and sonata for sleeping. I am very forgetful, I lose things around the house, I forget movies right after I watch them, and I also forget words, and whole sentances when talking. I read that some side effects of ativan are: memory lose, and anxiety, even though it is an anti anxiety medicine. Since different meds affect people differenty, it's hard to say. I've never heard of olanzepine. I sure hope they get his meds straightened out and things get better.