Comparisons
Compare peptides side by side
Evidence-weighted comparisons across mechanism, effect size, safety clarity and regulatory status.
- Comparisons
- 120
- Methodology
- 4-Step Verification
Retatrutide vs Semaglutide
How the next-generation triple agonist compares with the best-characterised GLP-1 receptor agonist.
Retatrutide vs Tirzepatide
Triple agonist vs dual agonist. Both are at the leading edge of metabolic peptide development.
BPC-157 vs TB-500
The two most-discussed recovery research peptides, often paired in literature.
CJC-1295 vs Ipamorelin
Long-acting GHRH analog vs selective GH secretagogue. Often combined.
Tesamorelin vs CJC-1295
Two GHRH analogs — one with an approved indication, one without.
Semaglutide vs Tirzepatide
The two best-evidenced incretin-based therapies for weight management and type 2 diabetes.
Best Peptides for Metabolic Research
A category overview of the metabolic peptide landscape, ranked by evidence quality.
Best Peptides for Recovery Research
A category overview of recovery-focused research peptides.
Best Peptides for Skin Research
A category overview of peptides studied in skin biology.
Best Peptides for Longevity Research
A category overview of longevity-focused research peptides.
Retatrutide vs Liraglutide
Triple agonist vs GLP-1 monotherapy. Retatrutide represents the next generation of metabolic peptides.
Semaglutide vs Liraglutide
Two generations of GLP-1 agonists. Semaglutide shows higher efficacy in modern trials.
Tirzepatide vs Liraglutide
Dual agonist vs GLP-1 monotherapy. Tirzepatide adds GIP signalling for enhanced metabolic effect.
MK-677 vs Ipamorelin
Ghrelin mimetic vs GHS-R agonist. Different routes to GH secretion.
MK-677 vs CJC-1295 + Ipamorelin
Single ghrelin mimetic vs dual GH-axis peptide combination.
MK-677 vs Sermorelin
Ghrelin mimetic vs short-acting GHRH analog.
Hexarelin vs Ipamorelin
Two GHS-R agonists with different selectivity and potency profiles.
Hexarelin vs MK-677
Injectable GHS-R agonist vs oral ghrelin mimetic.
Ipamorelin vs Sermorelin
GHS-R agonist vs GHRH analog. Complementary GH-axis targets.
CJC-1295 vs Sermorelin
Long-acting GHRH analog vs short-acting GHRH analog.
CJC-1295 vs Tesamorelin
Two GHRH analogs with different regulatory and evidence profiles.
CJC-1295 + Ipamorelin vs Tesamorelin
Dual GH-axis peptides vs single GHRH analog with approved indication.
CJC-1295 + Ipamorelin vs Sermorelin
Dual GH-axis peptides vs single short-acting GHRH analog.
Ipamorelin + Mod-GRF vs CJC-1295 + Ipamorelin
Two dual-peptide GH combinations with different GHRH components.
BPC-157 vs GHK-Cu
Two recovery-and-tissue-repair peptides with different mechanistic bases.
BPC-157 vs Thymosin Alpha-1
Recovery peptide vs immune-modulating peptide.
BPC-157 vs KPV
Tissue-repair peptide vs immune-modulating tripeptide.
TB-500 vs GHK-Cu
Thymosin-beta-4 fragment vs copper-peptide complex.
TB-500 vs Thymosin Alpha-1
Two thymosin-derived peptides with different focuses: recovery vs immunity.
GHK-Cu vs Thymosin Alpha-1
Copper-peptide vs immune-modulating thymic peptide.
Follistatin-344 vs BPC-157
Myostatin-inhibiting peptide vs tissue-repair peptide.
Follistatin-344 vs TB-500
Muscle-growth peptide vs recovery-and-repair peptide.
IGF-1 LR3 vs MK-677
Direct IGF-1 analog vs GH secretagogue.
IGF-1 LR3 vs CJC-1295 + Ipamorelin
Direct growth factor vs GH-axis peptides.
Fragment 176-191 vs AOD-9604
Two growth-hormone-derived fat-loss research peptides.
Fragment 176-191 vs Semaglutide
GH-derived fat-loss peptide vs GLP-1 agonist.
Melanotan II vs PT-141
Two melanocortin-axis peptides with different effects.
MOTS-c vs Epitalon
Two longevity-focused research peptides with different mechanisms.
Epitalon vs Thymosin Alpha-1
Cellular-aging peptide vs immune-modulating peptide.
MOTS-c vs Thymosin Alpha-1
Mitochondrial peptide vs immune-modulating peptide.
DSIP vs Cerebrolysin
Sleep-promoting neuropeptide vs brain-derived peptide complex.
Selank vs Semax
Two Russian-origin cognitive and mood peptides.
Semax vs Cerebrolysin
Synthetic cognitive peptide vs brain-derived peptide complex.
Cerebrolysin vs Selank
Brain-derived complex vs synthetic mood/cognitive peptide.
KPV vs Thymosin Alpha-1
Minimal immune-modulating tripeptide vs established thymic peptide.
Best Peptides for Fat-Loss Research
A category overview ranking peptides by metabolic effect size in research.
Best Peptides for Muscle-Recovery Research
A category overview of peptides studied in muscle repair and recovery.
Best Peptides for Tendon Research
A category overview of peptides studied in tendon biology and repair.
Best Peptides for Sleep Research
A category overview of peptides studied for sleep and rest quality.
Best Peptides for Cognitive Research
A category overview of peptides studied for cognitive function and memory.
Best Peptides for Women Research
A category overview of peptides with female-focused research applications.
Best Peptides for Anti-Aging Research
A category overview of peptides studied in aging and longevity.
Best Peptides for Immune Research
A category overview of peptides studied for immune modulation.
Best Peptides for Collagen Research
A category overview of peptides studied for collagen synthesis and structure.
Best Peptides for Mitochondrial Research
A category overview of peptides studied for mitochondrial function.
Best Peptides for Libido Research
A category overview of peptides studied for sexual function and arousal.
Best Peptides for Glucose Research
A category overview of peptides studied for glucose control and metabolic health.
Best Peptides for Insulin-Resistance Research
A category overview of peptides studied for metabolic syndrome and insulin sensitivity.
Best Peptides for Injury-Recovery Research
A category overview of peptides studied for healing after injury.
Best Peptides for Skin-Health Research
A category overview of peptides studied for skin biology and aesthetics.
GHRP-2 vs GHRP-6
Two secretagogue peptides with differing GH and cortisol activation profiles.
GHRP-2 vs Ipamorelin
Non-selective ghrelin-agonist vs selective GHRP-receptor peptide.
GHRP-2 vs Hexarelin
Two potent GH secretagogues with different tissue-binding profiles.
GHRP-6 vs MK-677
Peptide secretagogue vs oral GH secretagogue mimic.
Mod GRF 1-29 vs CJC-1295
Short-acting GHRH fragment vs long-acting GHRH analog.
Mod GRF 1-29 vs Sermorelin
Modified GHRH fragment vs naturally-derived GHRH(1-29).
Mod GRF 1-29 vs Tesamorelin
Modified GHRH analog vs long-acting GHRH with depot properties.
Ipamorelin vs Mod GRF 1-29
Two complementary GH-release pathways: secretagogue vs secretagogue-releasing hormone.
Argireline vs Snap-8
Two hexapeptides with cosmetic and anti-wrinkle research applications.
Argireline vs Matrixyl
Two cosmetic peptides with different mechanisms: anti-wrinkle vs collagen-stimulation.
Matrixyl vs Snap-8
Collagen-stimulation vs SNARE-inhibition cosmetic peptides.
Matrixyl vs GHK-Cu
Two collagen-promoting cosmetic peptides with different signaling pathways.
Copper Peptides vs GHK-Cu
Broad copper-peptide category vs the most-studied copper-peptide variant.
Copper Peptides vs Matrixyl
Copper-peptide complexes vs palmitoyl-pentapeptide for cosmetic research.
MT-1 vs Melanotan II
Two melanocortin-agonist peptides with different potency and side-effect profiles.
SS-31 vs MOTS-c
Two mitochondrial-targeting peptides with distinct mechanisms and tissue focus.
SS-31 vs Epitalon
Mitochondrial-protective peptide vs telomerase-activating peptide.
FOX04-DRI vs Epitalon
Senolytic peptide (cellular rejuvenation) vs telomerase-activating peptide.
P21 vs Cerebrolysin
Senescence-inhibitor peptide vs neuropeptide complex.
P21 vs Dihexa
Cell-cycle inhibitor vs synapse-formation enhancer peptide.
Dihexa vs Cerebrolysin
Synthetic neuropeptide vs brain-derived peptide complex for neuroprotection.
Dihexa vs Semax
Two neuroactive peptides with cognitive and stress-resilience research.
Cortagen vs Cerebrolysin
Stress-resilience peptide vs neuropeptide complex.
Pinealon vs Cerebrolysin
Pineal-regulatory peptide vs broad neuropeptide complex.
Pinealon vs Epitalon
Two thymic/pineal-derived peptides with different aging mechanisms.
Tesofensine vs Semaglutide
Triple monoamine reuptake inhibitor vs GLP-1 agonist for weight management research.
Tesofensine vs Retatrutide
CNS-acting weight-loss agent vs triple GLP-1/GIP/glucagon agonist.
Tesofensine vs Liraglutide
CNS monoamine agent vs GLP-1 agonist for metabolic research.
Adipotide vs AOD-9604
Two peptides studied for fat loss via different mechanisms.
Larazotide vs BPC-157
Two peptides studied for gut-barrier integrity and intestinal healing.
Larazotide vs Thymosin Alpha-1
GI barrier-function peptide vs immune-modulating peptide.
Lipopeptide vs GHK-Cu
Lipid-conjugated peptides vs copper-tripeptide complex.
Lipopeptide vs Copper Peptides
Lipid-conjugated peptides vs copper-bound peptides for skin research.
LR3 IGF1-Des vs IGF-1 LR3
Two long-acting IGF-1 variants with different modifications.
LR3 IGF1-Des vs MK-677
Direct IGF-1 peptide vs indirect GH-secretagogue for growth-factor research.
Retatrutide vs AOD-9604
Triple GLP-1/GIP/GCG agonist vs HGH-derived lipid-metabolism fragment.
Semaglutide vs AOD-9604
Approved GLP-1 agonist vs HGH lipid-metabolism fragment.
Tirzepatide vs AOD-9604
Approved GLP-1/GIP dual agonist vs HGH lipid-metabolism fragment.
Fragment 176-191 vs Tirzepatide
HGH C-terminal lipid-modifying fragment vs dual GLP-1/GIP agonist.
Fragment 176-191 vs Liraglutide
Lipid-selective HGH fragment vs established GLP-1 agonist.
Selank vs Cortagen
Two stress-resilience peptides with different mechanisms.
Selank vs Pinealon
Mood-regulating peptide vs sleep/circadian peptide.
Selank vs P21
Stress-resilience peptide vs senescence-inhibition peptide.
DSIP vs Pinealon
Sleep-promoting peptide vs circadian-regulating peptide.
Follistatin-344 vs IGF-1 LR3
Myostatin-inhibitor vs growth-factor peptide for muscle research.
Best Peptides for Recovery-After-Surgery Research
Category overview of peptides studied in post-operative healing and tissue repair research.
Best Peptides for Tendinopathy Research
Category overview of peptides studied for tendon injury and healing research.
Best Peptides for Gut-Health Research
Category overview of peptides studied in intestinal integrity and barrier function research.
Best Peptides for Bone-Density Research
Category overview of peptides studied in bone health and density-preservation research.
Best Peptides for Strength Research
Category overview of peptides studied in muscle strength and power development research.
Best Peptides for Endurance Research
Category overview of peptides studied in aerobic capacity and mitochondrial efficiency research.
Best Peptides for Mood Research
Category overview of peptides studied in mood regulation and emotional resilience research.
Best Peptides for Focus Research
Category overview of peptides studied in cognitive focus and concentration enhancement research.
Best Peptides for Stress Research
Category overview of peptides studied in stress resilience and adaptation research.
Best Peptides for Joint-Health Research
Category overview of peptides studied in cartilage preservation and joint-repair research.
Best Peptides for Hair Research
Category overview of peptides studied in hair growth and follicle health research.
Best Peptides for Wrinkle Research
Category overview of peptides studied in facial aesthetics and anti-wrinkle research.
Best Peptides for Eye Research
Category overview of peptides studied in ocular health and vision-preservation research.
Best Peptides for Pigmentation Research
Category overview of peptides studied in melanin production and skin-tone research.
Best Peptides for Cardiovascular Research
Category overview of peptides studied in cardiac function and cardiovascular health research.