AOD 9604 is a modified fragment of human growth hormone (hGH 176–191) designed to target fat metabolism without affecting natural growth hormone levels. Research shows it promotes lipolysis (fat breakdown), reduces lipogenesis (fat storage), and may support cartilage repair and musculoskeletal health. It has demonstrated a favorable safety profile, β₃-adrenergic activation in adipose tissue, and potential oral bioactivity in experimental models.