Comparison

FOXO4-DRI vs Ipamorelin

Function

While FOXO4-DRI acts as a senolytic in preclinical models by promoting apoptosis of senescent cells, improving tissue function and healthspan measures in aged animals38, 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 FOXO4-DRI works as a D-retro-inverso peptide derived from a FOXO4 region that competes with endogenous FOXO4 for binding to p53, thereby releasing p53 to trigger apoptosis selectively in senescent cells38, 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

FOXO4-DRI is amino acids long, whereas Ipamorelin is longer as it has a length of 5 amino acids. FOXO4-DRI 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

FOXO4-DRI

Intracellular target is the FOXO4–p53 protein–protein interaction interface; it does not signal via a traditional cell-surface receptor38

Ipamorelin

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

Organism or Origin

FOXO4-DRI

Synthetic peptide based on human FOXO4 transcription factor3898

Ipamorelin

Fully synthetic peptide ghrelin mimetic16

Gene

FOXO4-DRI

FOXO4

Ipamorelin

GHSR

Sources

38FOXO4-DRI - Research Information - Peptpedia, https://peptpedia.org/peptide/foxo4-dri
98Human FOXO4 Synthetic Peptide (PEP-1088), https://www.thermofisher.com/proteins/product/Human-FOXO4-Synthetic-Peptide/PEP-1088
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