Research use only. The materials discussed on this page are sold exclusively for in vitro laboratory research. They are not for human or veterinary use, and nothing here is medical advice or a claim of benefit. Animal-model and clinical data are mentioned only as cited published literature.
Head-to-head scientific summaries of research peptides: structure, mechanisms, half-life and the published research contexts in which each compound appears. All information is drawn from the published literature and is intended for laboratory researchers.
Research peptide comparisons
BPC-157 vs TB-500
BPC-157 and TB-500 are the two most-studied research peptides in tissue regeneration and healing. Although they share similar research indications (musculoskeletal repair, angiogenesis, cytoprotection), their mechanisms of action and pharmacological profiles differ significantly.
Read the BPC-157 vs TB-500 comparison
Ipamorelin vs CJC-1295
Ipamorelin and CJC-1295 are two growth hormone (GH) secretagogues commonly studied in endocrinology research. Their mechanisms of action are complementary: Ipamorelin mimics ghrelin (GHRP), while CJC-1295 is a GHRH analog.
Read the Ipamorelin vs CJC-1295 comparison
Retatrutide vs Semaglutide
Retatrutide and Semaglutide represent two generations of peptides studied in metabolic research. Semaglutide (Ozempic, Wegovy) is a GLP-1 mono-agonist, while Retatrutide is a next-generation triple agonist simultaneously targeting GLP-1, GIP, and glucagon.
Read the Retatrutide vs Semaglutide comparison
MOTS-c vs SS-31
MOTS-c and SS-31 (Elamipretide) are two peptides studied for their action on mitochondrial function, but they work via completely different mechanisms. MOTS-c is a signaling mitochondrial-derived peptide (MDP), while SS-31 specifically targets cardiolipin in the inner mitochondrial membrane.
Read the MOTS-c vs SS-31 comparison
GHK-Cu vs Argireline (Acetyl Hexapeptide-3)
GHK-Cu and Argireline are two essential peptides in in vitro cosmetology research. Their mechanisms are radically different: GHK-Cu modulates the extracellular matrix and tissue regeneration, while Argireline is an analog of the SNAP-25 N-terminal chain that inhibits neurotransmitter release.
Read the GHK-Cu vs Argireline (Acetyl Hexapeptide-3) comparison
AOD-9604 vs HGH Fragment 176-191
AOD-9604 and HGH Fragment 176-191 are two peptides derived from the C-terminal portion of human growth hormone, studied for their lipolytic action without somatotropic effects. Although structurally very close, their pharmacological profiles differ.
Read the AOD-9604 vs HGH Fragment 176-191 comparison
Tesamorelin vs CJC-1295
Tesamorelin and CJC-1295 are two GHRH (Growth Hormone Releasing Hormone) analogs modified to resist enzymatic degradation. Tesamorelin (Egrifta) is FDA-approved for HIV-associated lipodystrophy; CJC-1295 remains research-use only.
Read the Tesamorelin vs CJC-1295 comparison
Semax vs Selank
Semax and Selank are two synthetic heptapeptides developed by the Russian Academy of Medical Sciences in the 1980s-1990s, both extensively studied in nootropic and behavioral neuroscience research. While both are short heptapeptides used in cognitive research, their mechanisms target distinct pathways: Semax acts on BDNF/NGF and dopaminergic systems, while Selank modulates GABA and anxiety circuits.
Read the Semax vs Selank comparison
Browse the catalog
All compounds are supplied for in vitro research use only, with a batch certificate of analysis. See the full research catalog.
Regulatory disclaimer
The peptides discussed in these comparisons are not approved by the FDA, EMA, MHRA, or any regulatory agency for human or veterinary clinical use, except where a specific approved product is named. They are sold exclusively for in vitro scientific research. These pages are neither medical advice nor a recommendation for clinical use.
