SUBLOCADE Long-term Outcomes Study aims to learn more about using SUBLOCADE for people with opioid use disorder (OUD). Opioid use disorder is a condition where someone can't stop using opioid drugs even if they're harmful. SUBLOCADE is a medicine that helps people stop using opioids. In this study, researchers will watch how participants' lives change over time while they use SUBLOCADE. They'll look at things like health, lifestyle, and well-being. The study will last for up to 4 years and will observe how people avoid or misuse opioids.

This is a Phase IV study, meaning it's done after the medicine is already available to the public. It's observational, which means doctors will watch and collect data without changing treatments. To join, you must be 18 or older, not in another medical trial, and have recently started or completed a previous SUBLOCADE study.

• The study lasts up to 4 years.
• Participants must have started SUBLOCADE treatment recently.
• Participants will not receive treatment changes, only observation.