This research is looking at the long-term safety of a medicine called NBI-1117568 for adults who have schizophrenia, which is a mental disorder affecting how a person thinks, feels, and behaves. Participants must have schizophrenia and live in stable housing. They cannot take certain medications while in the study and must not have allergies to the study drug. People who have other serious health issues, risky behavior, or substance abuse problems cannot participate.

• Study Length: This is a long-term study, meaning it will take a significant amount of time to complete.
• Participation Requirements: Participants need to stop certain medications and follow the study rules carefully.
• Eligibility: Not everyone can join; there are specific health and safety criteria to meet.