Comparison

Dulaglutide vs Ipamorelin

Function

While Dulaglutide is a once-weekly GLP-1RA for type 2 diabetes that lowers HbA1c and body weight by enhancing glucose-dependent insulin secretion and reducing appetite6668, Ipamorelin is investigated for producing moderate, physiologic-like GH pulses useful for studying anabolic, body-composition, and recovery effects with a relatively clean endocrine side-effect profile compared with earlier GHRPs16.

Mechanism

While Dulaglutide works as a recombinant fusion protein consisting of two disulfide-linked GLP-1(7–37) analogs each covalently fused via a linker to an IgG4 Fc fragment, yielding a large, long-acting GLP-1 receptor agonist protected from DPP-4 degradation66, Ipamorelin is a third-generation pentapeptide growth hormone secretagogue that selectively agonizes the ghrelin (GHSR-1a) receptor to trigger controlled, GH-specific pituitary release with minimal effects on cortisol or prolactin16269596.

Length and Sequence

Dulaglutide is amino acids long, whereas Ipamorelin is longer as it has a length of 5 amino acids. Dulaglutide is made up of a sequence of sequence data not available in the current dataset. Ipamorelin is made up of a sequence of Aib, Histidine, D-2-Nal, Phenylalanine, Lysine.

Receptor

Dulaglutide

GLP-1 receptor (GLP1R) 6680

Ipamorelin

Ghrelin/growth hormone secretagogue receptor type 1a (GHSR-1a)169596104

Organism or Origin

Dulaglutide

Engineered human GLP-1 analog–IgG4 Fc fusion protein produced in mammalian cell culture66

Ipamorelin

Fully synthetic peptide ghrelin mimetic16

Gene

Dulaglutide

GCG

Ipamorelin

GHSR

Sources

66Dulaglutide | 923950-08-7 - ChemicalBook, https://amp.chemicalbook.com/ChemicalProductProperty_EN_CB12738186.htm?N=United+Kingdom
68Glucagon-like peptide-1 analogues: An overview - PMC, https://pmc.ncbi.nlm.nih.gov/articles/PMC3712370/
80GLP-1 Localisation and Proglucagon Gene Expression in ..., https://pmc.ncbi.nlm.nih.gov/articles/PMC6200298/
16Ipamorelin peptide: A gentle pulse, but is it strong enough?, https://oathpeptides.com/2025/11/05/ipamorelin-peptide-a-gentle-pulse-but-is-it-strong-enough/
96Growth Hormone Secretagogue Receptor - ScienceDirect.com, https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/growth-hormone-secretagogue-receptor