Schizophrenia symptoms are linked to dopamine dysregulation, with current antipsychotics targeting D2 receptors. Clozapine, binding to different receptors, showed promise but faced side effects. Research on muscarinic receptors (M1 and M4) revealed their importance in cognitive functions and perception. Xanomeline, initially for Alzheimer’s, was tested for schizophrenia but caused unacceptable side effects. Karuna Therapeutics combined xanomeline with trospium, creating Cobenfy, which addresses positive, negative symptoms, and cognitive issues without severe side effects. Cobenfy’s approval highlights the value of basic research despite long timelines.