A Peptide is a molecule made up of small chains of amino acids, often ranging in length from 2 to 50 amino acids. Proteins are composed of amino acids hence peptides may be thought of as little proteins. Compared to proteins, peptides are less complicated. There are several recognised natural peptides that serve as signalling molecules in a number of physiological activities. Because they are extremely selective molecules with excellent safety and effectiveness profiles, naturally occurring peptides are particularly intriguing components for the building of novel medications. Peptide Medications are any of a number of polypeptides with biological action. In medicine, peptide medicines are often employed. The two most common dose forms are liquid injectable and freeze-dried powder injection. Since peptide medicines have a limited half-life and are readily destroyed in vivo, patients must endure regular administration, which causes continual alterations. As a result, research should be done on the related formulations, delivery systems, and absorption pathways.