They are shorter segments of proteins secreted by our different organs, i.e. if a protein X secreted by our anterior pituitary contains 100 amino acids and leads to increased growth hormone production, the Peptide contains only 75 amino acids but results in increased growth hormone secretion as well.
Are peptides safe?
Peptides are ubiquitous in our bodies. The secretagogue peptides are typically a shortened version of molecules that our bodies already produce.