This study examines how well a medicine called darigabat works for people with panic disorder. Panic disorder is when someone has sudden, repeated feelings of fear and anxiety called panic attacks. Participants will take darigabat (25 mg twice a day) or a placebo (a pill that looks like medicine but has no active ingredients) to see which works better. The study checks for any side effects and how the body handles the medicine. To join, you must have had at least 8 panic attacks in the past month and a certain score on a panic disorder test. You must also weigh more than 48 kg and have a body mass index (BMI) between 17.5 and 40.0. You cannot join if you have other major mental health issues, have started new therapy, or have certain health conditions like heart or liver disease. If you have had serious thoughts of self-harm recently, you also cannot join.

• The study involves taking medication twice a day.
• Participants are checked for side effects and how well the medicine works.
• Some people will receive a placebo instead of the actual medicine.