Peptide research encyclopedia
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for Peptide Research.
Evidence-based profiles for 100+ peptides. Mechanisms of action, pharmacokinetics, and direct links to PubMed-indexed studies — written for practitioners and researchers, not marketing departments.
Free: 2025 Peptide Research Primer
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102
Peptide profiles
16
Research categories
1,200+
PubMed studies linked
Free
Core access, always
Quick reference
What are research peptides?
Research peptides are short chains of amino acids — typically 2 to 50 residues — studied for their roles in tissue repair, immune regulation, hormone secretion, and neurological function. Unlike small-molecule drugs, they act with high receptor specificity and degrade naturally into amino acids. Most are administered subcutaneously due to low oral bioavailability.
Read the full glossary →Categories covered
Growth hormone secretagogues
GHRP-2, Ipamorelin, CJC-1295, Tesamorelin
Tissue repair and wound healing
BPC-157, TB-500, GHK-Cu
Metabolic and GLP-1 analogs
Semaglutide, Tirzepatide, Retatrutide, AOD-9604
Cognitive function
Semax, Selank, Dihexa
Immune modulation
Thymosin Alpha-1, KPV, LL-37
Longevity and telomere biology
Epithalon, MOTS-c, Humanin
Browse by category
Research areas
Anti-Aging & Longevity
Peptides studied for cellular repair, telomere maintenance, and extending healthspan.
🦠4 peptidesAntimicrobial
Peptides with antibacterial, antifungal, or antiviral properties.
🫀19 peptidesCardiovascular
Peptides studied for heart health, blood pressure regulation, and vascular function.
🧠23 peptidesCognitive Enhancement
Peptides studied for neuroprotection, memory, focus, and neuroplasticity.
⚡21 peptidesFat Loss & Metabolic
Peptides involved in lipolysis, metabolic rate, insulin sensitivity, and body composition.
💊11 peptidesGLP-1 & Metabolic Hormones
GLP-1 receptor agonists and related peptide hormones studied for diabetes, obesity, and metabolism.
📈16 peptidesGrowth Hormone Axis
Peptides that stimulate growth hormone release or enhance the GH/IGF-1 axis.
🔬15 peptidesHealing & Recovery
Peptides researched for accelerating tissue repair, wound healing, and post-injury recovery.
🛡️13 peptidesImmune Support
Peptides that modulate or enhance immune system function and resilience.
⚙️4 peptidesMitochondrial Health
Peptides that target mitochondrial function, biogenesis, and cellular energy.
💪10 peptidesMuscle & Performance
Peptides researched for muscle growth, strength, and athletic performance.
🔷13 peptidesNeuroprotection
Peptides researched for protecting against neurodegeneration and brain injury.
🔥9 peptidesPain & Inflammation
Peptides researched for analgesic effects and reducing inflammatory pathways.
❤️6 peptidesSexual Health
Peptides researched for sexual function, libido, and reproductive health.
✨12 peptidesSkin & Cosmetic
Peptides used in dermatology and cosmetics for collagen synthesis, wrinkle reduction, and skin repair.
🌙5 peptidesSleep & Circadian
Peptides that influence sleep quality, circadian rhythm, and recovery during sleep.
Specimen index
Explore peptides
ACE-031
Phase IIACVR2B-Fc · Bimagrumab-precursor
ACE-031 is a fusion protein of the extracellular domain of activin type IIB receptor (ACVR2B) fused to human IgG1 Fc. It acts as a myostatin/activin trap, sequestering multiple TGF-β superfamily ligands (myostatin, GDF-11, activin A) that inhibit muscle growth. Phase 2 trials in Duchenne muscular dystrophy showed significant lean muscle mass gains before being halted for safety signals (nosebleeds, telangiectasias). Related compound bimagrumab continues development.
ACTH
ApprovedAdrenocorticotropic Hormone · Corticotropin
ACTH is a 39-amino-acid peptide hormone released by the anterior pituitary in response to CRH. Its primary role is stimulating the adrenal cortex to produce cortisol, but it also has direct melanotropic and lipolytic effects. Synthetic forms (cosyntropin) are used diagnostically for adrenal insufficiency testing. Longer-acting formulations (H.P. Acthar Gel) are approved for multiple sclerosis relapses, infantile spasms, and various inflammatory conditions.
Adrenomedullin
Phase IIAM
Adrenomedullin is a 52-amino-acid vasoactive peptide originally isolated from human pheochromocytoma. It is a potent vasodilator acting through CGRP receptors, promotes natriuresis, reduces inflammation, protects vascular endothelial barrier function, and enhances wound healing. Circulating AM levels rise in heart failure, sepsis, and critical illness — making it both a biomarker and emerging therapeutic target.
Angiotensin 1-7
Phase IIAng(1-7) · A779 counter-regulatory
Angiotensin 1-7 is a 7-amino-acid peptide of the renin-angiotensin system (RAS) and the primary product of ACE2 enzyme activity. It opposes the vasoconstrictive, pro-inflammatory actions of Angiotensin II by acting on the Mas receptor — promoting vasodilation, natriuresis, anti-fibrosis, and anti-inflammation. Extensively studied for heart failure, hypertension, and COVID-19, it represents the counter-regulatory arm of the RAS.
ANP
ApprovedAtrial Natriuretic Peptide · ANF
ANP (Atrial Natriuretic Peptide) is a 28-amino-acid cardiac hormone secreted by atrial cardiomyocytes in response to volume overload. It reduces blood pressure through natriuresis, vasodilation, and inhibition of the RAAS. Carperitide (synthetic ANP) is approved in Japan for acute heart failure. ANP is a key biomarker and drug target for heart failure and hypertension, studied alongside BNP and C-type natriuretic peptide.
Anserine
PreclinicalBeta-Alanyl-N-methyl-L-histidine
Anserine is a methylated dipeptide analog of carnosine found in high concentrations in avian and fish muscle. It shares carnosine's pH-buffering and antioxidant properties but shows superior blood-brain barrier penetration. Research highlights potential for cognitive decline prevention, reduction of amyloid-beta toxicity, and improved exercise performance. It is often studied alongside carnosine for synergistic effects.
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How we research
Primary literature first
Every profile starts with a PubMed search, not a product page. We pull primary literature, note the study design — in vitro, animal model, or human trial — and rate the evidence accordingly. You will always know whether a claim comes from a rat study or a randomized controlled trial.
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Profiles follow a consistent structure: mechanism of action, pharmacokinetics (half-life, bioavailability, routes), clinical evidence with study links, and administration context. The format does not change based on who makes the compound.
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Vetted suppliers appear in our directory because they publish third-party certificates of analysis and pass our sourcing criteria, not because they advertise with us. Research findings are editorially independent of commercial relationships.
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New PubMed studies across 16 research categories, summarized and linked.
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