Peptide therapeutics is a research field and therapeutic approach focused on the development and application of peptides as pharmaceutical agents for the treatment of diseases. This domain investigates the design, synthesis, biological mechanisms, and clinical efficacy of diverse peptide molecules, including linear, cyclic, and modified forms, leveraging their inherent biological specificity to interact with target molecules or modulate physiological pathways. Its significance lies in offering highly specific and often well-tolerated therapeutic options for a wide range of conditions, from metabolic disorders and infections to cancer and immune-related diseases.