Peptides are short polymers of amino acids linked by peptide bonds. They have the same peptide bonds as those in proteins, but are usually shorter in length. The shortest peptides are called dipeptides. They consist of two amino acids joined by a single peptide bond. There can also be, tetrapipteds, pentapeptides, etc. Peptides have an amino end and a carboxyl end, unless they are cyclic peptides. A polypeptide is a single linear chain of amino acids bonded together by peptide bonds. Protein molecules consist of one or more polypeptides put together typically in a biologically functional way and sometimes have non-peptidegroups attached. These non-peptide groups are called prosthetic groups or cofactors.
Peptides are very new and regarded as modern preventative or wellness medicine. They are designed to do everything from generating cells, increase REM sleep, increase sex drive, bring body fat down and increase appetite. All of the functions of peptides are beneficial to wellness, increase performance and anti ageing.