Are you sure that he is taking Olanzapine? He may have switched by now and I've been trying to figure out what medication he may have switched to. In the latest podcast that he went on in 2020, he said he is currently treating his stutter but said that he can't disclose the medication. Although in the presentation he did a few years ago, he said that he has been on the medication he is taking (at the time) for about 15+ years.