I smoke cigars and vape with nicotine ejuice and it really helps me with my schizophrenia symptoms. I've read articles about how researchers are experimenting with a new medication that has nicotine as an active ingredient and is taken via a nasal spray. Also, back when I used to be a psychology major, I did a project on schizophrenia and learned that most people who have schizophrenia smoke in order to alleviate some symptoms of their medications. Even though I regularly use nicotine, I do not advise anyone to start using nicotine as it is an addictive chemical and carries other health consequences.