Tirzepatide Pen is a pre-filled delivery device designed for the administration of tirzepatide, a synthetic peptide that acts as a dual agonist of glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. It has been studied in research settings for its interaction with incretin-related signaling pathways, including those associated with metabolic regulation and glucose response. The pen format is intended to provide consistent and controlled dosing in applicable use settings.