PEPS IOW EDUCATION
Peptide Research Hub
A structured scientific guide to peptides, peptide research and emerging compounds — separating in-vitro, animal and human evidence so preliminary findings are not treated as established facts.
Shop research cataloguePeptide Research Directory
Melanocortin Research
Melanotan I Research: What Is MT-1 & How Does It Differ From Melanotan II?
Melanotan I, also known through afamelanotide development, is an alpha-MSH analogue studied in melanocortin receptor and pigmentation research.
Read guide →
Melanocortin Research
Melanotan I vs Melanotan II: What’s the Difference?
Melanotan I and Melanotan II are related alpha-MSH analogues, but they differ in structure, receptor activity, development history and evidence.
Read guide →
Mitochondrial Peptide Research
SS-31 Peptide Research: Elamipretide & Mitochondrial Science Explained
SS-31, also known as elamipretide, is a mitochondria-targeting peptide studied in cardiolipin, bioenergetics and oxidative-stress research.
Read guide →
Pineal & Ageing-Related Peptide Research
Epitalon Peptide Research: Epithalon, AEDG & the Scientific Evidence
Epitalon or Epithalon refers to the AEDG tetrapeptide discussed in pineal peptide, telomerase and ageing-related research.
Read guide →
Thymic & Immune Peptide Research
Thymosin Alpha-1 Research: What Is Tα1?
Thymosin alpha-1 is a thymic peptide investigated in immune-system signalling, T-cell, dendritic-cell and clinical research.
Read guide →
Innate Immunity Peptide Research
LL-37 Peptide Research: Human Antimicrobial Peptide Science
LL-37 is a human cathelicidin antimicrobial peptide studied in innate immunity, microbial models, biofilms and inflammatory signalling.
Read guide →
Tissue-Protective Signalling Research
ARA-290 Peptide Research: Cibinetide & Tissue-Protective Signalling
ARA-290, also called cibinetide, is an erythropoietin-derived peptide investigated for tissue-protective and inflammatory-signalling research.
Read guide →
Mitochondrial Peptide Research
Humanin Peptide Research: Mitochondrial-Derived Peptide Science
Humanin is a mitochondrial-derived peptide investigated in cellular-stress signalling, mitochondrial biology, metabolism and neurological research.
Read guide →
Senescence & Ageing-Related Peptide Research
FOXO4-DRI Peptide Research: Senescence Research Explained
FOXO4-DRI is a research peptide associated with FOXO4, p53, cellular senescence and senescent-cell biology.
Read guide →
Neurological Peptide Research
DSIP Peptide Research: Delta Sleep-Inducing Peptide Explained
DSIP, or Delta Sleep-Inducing Peptide, is a historically studied peptide connected to sleep, neurological and endocrine research.
Read guide →
Neurological Peptide Research
Dihexa Research: HGF/c-Met & Neurobiological Research Explained
Dihexa is a research compound related to angiotensin IV work and studied around HGF/c-Met signalling and neurobiological models.
Read guide →
Pineal & Ageing-Related Peptide Research
Pinealon Peptide Research: What Is the EDR Tripeptide?
Pinealon is commonly discussed as the EDR tripeptide in neurological, gene-expression and ageing-related research contexts.
Read guide →
Thymic & Immune Peptide Research
Thymalin Research: Thymic Peptides & Scientific Evidence
Thymalin refers to thymus-derived peptide preparations discussed in thymic biology, immune research and ageing-related literature.
Read guide →
Neuroendocrine Peptide Research
VIP Peptide Research: Vasoactive Intestinal Peptide Explained
VIP, or vasoactive intestinal peptide, is an endogenous peptide involved in nervous-system, gastrointestinal, vascular and immune signalling.
Read guide →
Neuroendocrine Peptide Research
PACAP Peptide Research: PAC1 Receptors & Neurobiology
PACAP is pituitary adenylate cyclase-activating polypeptide, studied as PACAP-27 and PACAP-38 in PAC1 receptor and neurobiology research.
Read guide →
Neuroendocrine Peptide Research
Oxytocin Peptide Research: Receptors, Signalling & Human Biology
Oxytocin is a peptide hormone with established roles in reproductive physiology and complex research around social and neurological biology.
Read guide →
Metabolic & Incretin Research
What Is GLP-1? Glucagon-Like Peptide-1 Research Explained
GLP-1 is glucagon-like peptide-1, an incretin peptide studied through GLP-1 receptors, insulin and glucagon signalling and appetite-related pathways.
Read guide →
Metabolic & Incretin Research
What Is GIP? Glucose-Dependent Insulinotropic Polypeptide Explained
GIP is glucose-dependent insulinotropic polypeptide, historically called gastric inhibitory polypeptide and studied in incretin and metabolic signalling.
Read guide →
Metabolic & Incretin Research
Glucagon Peptide Research: Receptors & Metabolic Signalling
Glucagon is a pancreatic alpha-cell peptide hormone involved in glucose regulation, hepatic signalling and metabolic research.
Read guide →
Metabolic & Incretin Research
GLP-1 vs GIP vs Glucagon: What’s the Difference?
GLP-1, GIP and glucagon are distinct peptide signalling systems involved in incretin biology, insulin-related signalling and metabolic regulation.
Read guide →
Research Terminology
What Is a Peptide Stack? Research Terminology Explained
A peptide stack is informal online terminology for combining research compounds; it is not a scientific or regulatory classification.
Read guide →
Stack & Comparison Research
What Is the Wolverine Peptide Stack? BPC-157 & TB-500 Research Explained
The Wolverine Stack is an informal online name for discussing BPC-157 and TB-500-related research materials together; evidence for each compound does not establish effects of the combination.
Read guide →
Stack & Comparison Research
What Is the KLOW Peptide Stack? KPV, GHK-Cu, BPC-157 & TB-500 Explained
KLOW is an online term for a stack discussion involving KPV, GHK-Cu, BPC-157 and TB-500; the combination itself should not be presented as clinically proven.
Read guide →
Stack & Comparison Research
What Is the GLOW Peptide Stack? GHK-Cu, BPC-157 & TB-500 Research
GLOW Stack is an online term usually associated with GHK-Cu, BPC-157 and TB-500-related research discussions, but the stack itself is not clinically established.
Read guide →
Stack & Comparison Research
BPC-157 vs TB-500: What’s the Difference in Peptide Research?
BPC-157 and TB-500 are frequently discussed together, but they differ in structure, terminology, mechanisms investigated and strength of evidence.
Read guide →
Terminology & Comparison Research
TB-500 vs Thymosin Beta-4: Are They the Same Thing?
Thymosin beta-4 and materials described online as TB-500 are closely discussed, but the terms should not automatically be treated as identical.
Read guide →
Terminology & Comparison Research
Epitalon vs Epithalon: Are They the Same Peptide?
Epitalon and Epithalon are commonly used as naming variants for the AEDG tetrapeptide, but longevity claims should be separated from evidence quality.
Read guide →
Growth-Hormone & Endocrine Peptide Research
CJC-1295 DAC vs No DAC: What’s the Difference?
CJC-1295 with DAC and products called CJC no DAC differ mainly in albumin-binding design, duration and terminology around Modified GRF 1-29.
Read guide →
Mitochondrial Peptide Research
MOTS-c vs SS-31: Mitochondrial Peptide Research Compared
MOTS-c and SS-31/elamipretide are both discussed as mitochondrial peptide research areas, but they differ in origin, mechanism and clinical-development status.
Read guide →
Copper & Skin Peptide Research
GHK-Cu vs Copper Peptides: Are They the Same Thing?
GHK-Cu is a specific copper-bound peptide complex, while copper peptides is a broader category that can include different copper-binding compounds.
Read guide →
Tissue & Regenerative Biology Research
KPV vs BPC-157: What’s the Difference? Research Compared
KPV and BPC-157 are different peptides with different structures and research emphases; KPV deserves separate coverage in inflammatory-signalling research.
Read guide →
Tissue & Regenerative Biology Research
KPV Peptide Research: What Is KPV & What Does the Science Show?
KPV is a Lys-Pro-Val tripeptide related to alpha-MSH and investigated in melanocortin biology, inflammatory signalling, gastrointestinal models and skin research.
Read guide →
Metabolic & Incretin Research
Retatrutide Research
Retatrutide is an investigational triple GLP-1, GIP and glucagon receptor agonist studied in metabolic research.
Read guide →
Tissue & Regenerative Biology Research
BPC-157 Research
BPC-157 is a synthetic 15-amino-acid peptide widely discussed in tissue and gastrointestinal biology research.
Read guide →
Copper & Skin Peptide Research
GHK-Cu Research
GHK-Cu is a naturally occurring copper-binding peptide investigated in extracellular-matrix, fibroblast and skin biology.
Read guide →
Tissue & Regenerative Biology Research
TB-500 & Thymosin Beta-4 Research
Thymosin beta-4 is a naturally occurring 43-amino-acid peptide investigated in cell migration, angiogenesis and wound biology.
Read guide →
Growth-Hormone & Endocrine Peptide Research
CJC-1295 Research
CJC-1295 is a synthetic analogue of growth-hormone-releasing hormone investigated for GH and IGF-1 signalling.
Read guide →
Growth-Hormone & Endocrine Peptide Research
Ipamorelin Research
Ipamorelin is a growth-hormone secretagogue investigated for interaction with the ghrelin/GHS receptor.
Read guide →
Growth-Hormone & Endocrine Peptide Research
Tesamorelin Research
Tesamorelin is a synthetic GHRH analogue with substantial human clinical research in specific populations.
Read guide →
Metabolic & Incretin Research
Cagrilintide Research
Cagrilintide is a long-acting amylin analogue investigated in metabolic and appetite-regulation research.
Read guide →
Mitochondrial Peptide Research
MOTS-c Research
MOTS-c is a mitochondrial-derived peptide investigated in metabolism, cellular stress and mitochondrial signalling.
Read guide →
Tissue & Regenerative Biology Research
KPV Peptide Research
KPV is a three-amino-acid fragment related to alpha-melanocyte-stimulating hormone and inflammatory signalling research.
Read guide →
Neurological Peptide Research
Semax Research
Semax is an ACTH-derived synthetic peptide investigated primarily in neurological research.
Read guide →
Neurological Peptide Research
Selank Research
Selank is a synthetic peptide related to tuftsin and studied in neurobiological and anxiety-related research.
Read guide →
Melanocortin Research
Melanotan II Research
Melanotan II is a synthetic cyclic alpha-MSH analogue investigated for melanocortin-receptor activity.
Read guide →
What are peptides, and why are they researched?
Peptides are short chains of amino acids joined by peptide bonds. Many occur naturally throughout biology as hormones, signalling molecules or regulatory compounds. Modern peptide research examines how specific sequences interact with receptors, enzymes, hormones and cellular pathways. Research can involve metabolic signalling, endocrine pathways, collagen and extracellular-matrix biology, inflammatory signalling, neurological signalling, melanocortin receptor biology and mitochondrial function. The existence of research in an area does not mean a compound has been proven safe or effective as a medicine.
1. In-vitro
Cells, receptors or biological material outside a whole organism.
2. Animal
Whole biological systems, but not automatic evidence of human outcomes.
3. Observational
Human outcomes observed without necessarily assigning interventions.
4. Trials
Randomised controlled studies provide stronger causal evidence.
5. Replicated
Confidence increases when findings reproduce across larger studies.
Peptide research FAQ
A peptide is a chain of amino acids joined by peptide bonds. A research peptide is commonly supplied for laboratory, analytical or scientific research rather than as a licensed medicine. Purity describes how much of a sample corresponds to the intended compound, but chemical purity is not the same as sterility, biological safety or regulatory approval. Animal peptide research does not prove that the same outcome will occur in humans.
Quick glossary
Agonist — a molecule that activates a receptor.
Analogue — a molecule structurally related to another molecule but deliberately modified.
In vitro — experimentation outside a living organism.
In vivo — experimentation within a living biological organism.
Lyophilised — freeze-dried.
Receptor — a biological structure capable of recognising and responding to molecular signals.
Educational information only
The PEPS IOW Research Hub is provided solely for scientific, educational and informational purposes. It should not be interpreted as medical advice, treatment advice, a recommendation for human use or a claim regarding the efficacy, safety or intended effects of any PEPS IOW product. Products designated for research purposes are supplied solely for their stated research purpose and are not intended for human consumption.