This study is for people with post-bariatric hypoglycemia. Post-bariatric hypoglycemia is when blood sugar drops too low after weight-loss surgery. Participants will be in the study for up to 59 weeks. It starts with a 19-week Core Phase, where you take no medication for 4 weeks, followed by a 12-week period where you might get a real or fake treatment. After this, there's a 36-week Extension Phase where all will receive the real treatment. Treatment involves injections under the skin three times daily. You must be able to give yourself these injections. There is a 4-week follow-up for safety after treatment ends.

• Study lasts up to 59 weeks.
• May need to inject medication three times a day.
• Must stop other treatments for hypoglycemia before starting.

Participants must be adults over 18 who have had weight-loss surgery, have a specific low blood sugar condition, and can inject themselves. Pregnant women and people with certain medical conditions cannot join.