Definition
A peptide is a short sequence of amino acids — generally between 2 and roughly 50 — joined by peptide bonds. Peptides are the basic signaling molecules of human physiology: they act as hormones, neurotransmitters, growth factors, and regulators of immune and metabolic function. Peptides differ from full-length proteins primarily in length and complexity. Every compound profiled on TruthTides is a peptide, including the FDA-approved GLP-1 receptor agonist Semaglutide, the GHRH analog Tesamorelin, the gastric-derived BPC-157, and synthetic neuropeptides like Semax and Selank.
Source: Cross-cutting definition across all peptide profiles