https://apnews.com/article/schizophrenia-cobenfy-bristol-myers-squibb-37d550fb7c4ed71e4fcea85ded4ae5a9 > Some people who took a new schizophrenia drug for a year improved with only a few side effects, but many dropped out of the research, the company announced Thursday. > The results underscore the difficulties in treating schizophrenia, a severe mental illness that can cause people to hear voices, feel paranoid and withdraw from others. High dropout rates are typical in schizophrenia drug studies.