This study is for adults aged 18-65 who have an opioid use disorder, also known as opioid addiction. They must already be taking a medicine called buprenorphine. The study aims to see if a new medicine, BI 1356225, can help control impulsive behavior, which is when people act without thinking about the risks.
Participants are randomly placed into two groups: one takes BI 1356225, and the other takes a placebo, a pill that looks the same but has no medicine in it. They take one pill a day for 8 days and continue their regular buprenorphine treatment.
The study lasts up to 6 weeks and includes 3 visits to the study site. At one visit, participants stay for 9 nights. Doctors will check if the new medicine helps with impulsive behavior by using tasks on a computer and asking questions. They will also monitor for any side effects.
- Participants stay at the study site for 9 nights during one visit.
- The study lasts up to 6 weeks with 3 total visits.
- Participants must continue taking buprenorphine throughout the study.