Growth Hormone Peptides: The difference between Sermorelin, Ipamorelin, and Tesamorelin Figure 3 from Ipamorelin, the first selective growth hormone secretagogue. Semantic Scholar Peptide Series. Vol 5. Ipamorelin What you need to know, This one gets a lot of attention because it boosts growth hormone without spiking cortisol., That's rare., Most older GH peptides (GHRP 6, Ipamorelin (RUO) Selective GHS R1a Agonist USA Supplier The 4X Blend: A Peptide Based Mixture for Recovery, Metabolism, and Au Alpha BioMed