TITUSVILLE, N.J., Sept. 19 /PRNewswire/ -- Paliperidone extended-release (ER) tablets, an investigational, once-daily oral medication for schizophrenia, significantly improved sleep onset, sleep continuity, and duration of sleep in schizophrenia patients diagnosed with schizophrenia- related insomnia when compared with placebo. Data from this study were presented today at the 19th Congress of the European College of Neuropsychopharmacology (ECNP).