This study is about testing a medicine called daridorexant for people with PTSD (Post-Traumatic Stress Disorder). PTSD is a condition that some people get after experiencing a scary or stressful event. The study is called a Phase 2 trial, which means it is testing how safe and effective the medicine is. To make sure the test is fair, some participants will receive a placebo instead of the real medicine. A placebo is a substance that looks like the medicine but doesn't have any active ingredients. This way, researchers can compare the effects of the medicine against no treatment.

The study lasts for 16 weeks, including a 12-week treatment period. At the start, there's a 30-day screening to check if participants qualify, and a 4-week safety follow-up at the end. Participants who qualify will be randomly picked to get either the medicine or placebo.

• The study lasts for 16 weeks.
• You may receive a placebo instead of the real medicine.
• You cannot join if you have a history of narcolepsy or have taken daridorexant before.

For more information, you can visit the trial webpage linked here.