Peptides are everywhere right now, but most of what's marketed as a shortcut is really a signaling molecule with rules of its own. Here's what actually determines whether a peptide protocol works.

A physician's guide to the real differences between sermorelin, ipamorelin/CJC-1295, and tesamorelin — three distinct GHRH peptides with different mechanisms, potency, and ideal use cases. Written by Darrell Wilcox, MD.