oral risperidone

A Study to Compare Disease Progression and Modification Following Treatment With Paliperidone Palmitate Long-Acting Injection or Oral Antipsychotics in Participant's With Recent-onset Schizophrenia or Schizophreniform

Oral Versus Injectable Risperidone for Treating First-Episode Schizophrenia

Safety and PK Trial With Injectable ZX003 (Risperidone-SABER®) Compared to Risperdal® Consta® in Stable Schizophrenia

Risperidone Long-acting Versus Oral Risperidone in Patients With Schizophrenia and Alcohol Use Disorder

Study to Measure Drug Satisfaction of Patients With Schizophrenia After Switching From Risperidone to Paliperidone

A Follow-Up Study of Schizophrenic Participants Following Treatment Discontinuation After Remission From a First Psychotic Episode

A Positron-Emission-Tomography (PET) Study to Measure the Blockade of Dopamine Receptors (D2) in Specific Areas of the Brain in Relation to the Plasma Concentrations of Paliperidone Extended Release (ER) and Oral Risperidone in Schizophrenia Patients and Healthy Controls

Improving Work Outcome in People With Recent-onset Schizophrenia

28-30 Month Study Comparing Paliperidone Palmitate With Oral Risperidone for Treating Adults Diagnosed With Schizophrenia Within the Past 5 Years