A Study of Retatrutide (LY3437943) in the Maintenance of Weight Reduction in Individuals With Obesity

Inclusion Criteria: * Have obesity and a history of at least one self-reported unsuccessful dietary effort to reduce body weight Exclusion Criteria: * Have a self-reported change in body weight \>5 kilograms (kg) (11 pounds) within 90 days before screening * Have a prior or planned surgical treatment for obesity * Have a prior or planned endoscopic procedure and/or device-based therapy for obesity * Have Type 1 Diabetes, Type 2 Diabetes, or any other type of diabetes * Have a family or personal history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN-2) * Have had within the past 90 days before screening: * acute myocardial infarction * cerebrovascular accident (stroke) * hospitalization for unstable angina, or * hospitalization due to congestive heart failure * Have New York Heart Association Functional Classification Class IV congestive heart failure * Have a history of chronic or acute pancreatitis * Have taken weight loss drugs, including over-the-counter medications, within 90 days prior to screening