A Study of LY3209590 on Low Blood Sugar in Participants With Type 2 Diabetes Mellitus

Inclusion Criteria: * Have been diagnosed with Type 2 Diabetes Mellitus (T2DM) for at least 1 year prior to screening * Body mass index (BMI) of 18.5 to 40.0 kilograms per meter squared (kg/m²) * Be treated for T2DM with stable dose of metformin, a stable dose of a dipeptidyl peptidase-4 (DPP-4) inhibitor with or without metformin, or a stable dose of a glucagon-like peptide-1 (GLP-1) receptor agonist with or without metformin for at least 3 months prior to screening Exclusion Criteria: * Have an abnormality in the 12-lead ECG * Have a supine blood pressure at screening * Have alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>2.5x upper limit of normal (ULN) * Have a history of or current cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine (except T2DM and controlled thyroid disease), haematological, or neurological disorders * Are receiving chronic (lasting longer than 14 consecutive days) systemic or inhaled glucocorticoid therapy * Have an average weekly alcohol intake