Research Library
Peptide Library
Research summaries for 147 peptides, graded by what has actually been studied.
PSI publishes research summaries for 147 peptide compounds. Each one carries an evidence level from Preclinical through FDA Approved, a regulatory access state describing whether a doctor can currently have it compounded, and a link to the full research page.
Most Referenced Compounds
These six compounds account for the largest share of reader traffic and published research on the platform.
Semaglutide
The GLP-1 medicine behind Ozempic and Wegovy. Over 4,500 indexed studies. The deepest evidence base of any weight-loss compound in the library.
Tirzepatide
Dual GLP-1/GIP receptor agonist. Head-to-head trial data against semaglutide showed greater average weight loss. Approved as Mounjaro and Zepbound.
Liraglutide
First-generation GLP-1 with over 5,500 indexed studies. FDA-approved as Victoza for diabetes and Saxenda for weight management. The original clinical evidence anchor for this drug class.
BPC-157
The compound that brings most people to peptide research. Extensive animal data across tendons, gut, and wound healing. Human trials exist but remain limited.
TB-500
Over 1,000 indexed studies, primarily in animal models of tissue repair. Research spans wound healing, cardiac recovery, and neurological protection. Not yet tested in large human trials.
Retatrutide
Triple receptor agonist targeting GLP-1, GIP, and glucagon simultaneously. Produced the largest average weight loss recorded in a controlled Phase II trial. Not yet FDA approved.
All 147 Compounds
| Compound | Access | Evidence |
|---|---|---|
| 5-Amino-1MQ | Compoundable (Under Review) | Preclinical |
| Ac-SDKP | Compoundable (Under Review) | Human Trials |
| ACE-031 | Compoundable (Under Review) | Human Trials |
| Adipotide (FTPP) | Compoundable (Under Review) | Preclinical |
| AHK-Cu (Copper Tripeptide) | Compoundable (Under Review) | Animal Studies |
| Alpha-1 Antitrypsin Peptide (VIRIP) | Compoundable (Under Review) | Human Trials |
| Angiotensin-(1-7) | Compoundable (Under Review) | Human Trials |
| AOD-9604 | Not Compoundable (Voted Against) | Animal Studies |
| Apelin | Compoundable (Under Review) | Human Trials |
| Apelin-13 | Compoundable (Under Review) | Human Trials |
| ARA-290 | Compoundable (Under Review) | Human Trials |
| Argireline (Acetyl Hexapeptide-3) | Compoundable (Under Review) | Human Trials |
| B7-33 | Compoundable (Under Review) | Animal Studies |
| Beta-Glucan Peptide | Compoundable (Under Review) | Human Trials |
| Bimagrumab | Compoundable (Under Review) | Human Trials |
| Biomimetic Peptide 14 | Compoundable (Under Review) | Human Trials |
| BNP (Brain Natriuretic Peptide) | Compoundable (Under Review) | Human Trials |
| BPC-157 | Compoundable (Under Review) | Human Trials |
| BPC-157 Arginine Salt | Compoundable (Under Review) | Preclinical |
| BPC-157/TB-500 Blend | Compoundable (Under Review) | Preclinical |
| CagriSema | Compoundable (Under Review) | Human Trials |
| Cartalax | Compoundable (Under Review) | Animal Studies |
| Catestatin | Compoundable (Under Review) | Human Trials |
| Cathelicidin Peptides | Compoundable (Under Review) | Human Trials |
| Cerebrolysin | Compoundable (Under Review) | Human Trials |
| CGRP (Calcitonin Gene-Related Peptide) | Compoundable (Under Review) | Human Trials |
| CJC-1295 | Not Compoundable (Voted Against) | Animal Studies |
| CJC-1295 without DAC (Mod GRF 1-29) | Compoundable (Under Review) | Preclinical |
| Copeptin | Compoundable (Under Review) | Human Trials |
| Copper Peptides | Compoundable (Under Review) | Human Trials |
| Cortexin | Compoundable (Under Review) | Human Trials |
| Cortistatin | Compoundable (Under Review) | Human Trials |
| DAHK Peptide | Compoundable (Under Review) | Animal Studies |
| Davunetide (NAP/AL-108) NAP, AL-108 | Compoundable (Under Review) | Human Trials |
| Decorin | Compoundable (Under Review) | Human Trials |
| Defensins | Compoundable (Under Review) | Human Trials |
| Degarelix | FDA-Approved (Prescription) | FDA Approved |
| Dihexa | Compoundable (Under Review) | Animal Studies |
| DSIP | Compoundable (Under Review) | Human Trials |
| Enclomiphene | Compoundable (Under Review) | Human Trials |
| Epitalon Epithalon | Compoundable (Under Review) | Human Trials |
| Exenatide Byetta, Bydureon | FDA-Approved (Prescription) | FDA Approved |
| Follistatin | Compoundable (Under Review) | Human Trials |
| FOXO4-DRI | Compoundable (Under Review) | Animal Studies |
| Galanin | Compoundable (Under Review) | Animal Studies |
| GDF-11 (Growth Differentiation Factor 11) | Compoundable (Under Review) | Human Trials |
| GDF-15 | Compoundable (Under Review) | Human Trials |
| GHK | Compoundable (Under Review) | Human Trials |
| GHK-Cu | Compoundable (Under Review) | Human Trials |
| GHRP-2 | Not Compoundable (Insufficient Data) | Human Trials |
| GHRP-6 | Not Compoundable (Insufficient Data) | Human Trials |
| GIP (Glucose-Dependent Insulinotropic Polypeptide) | Compoundable (Under Review) | Human Trials |
| Glucagon | FDA-Approved (Prescription) | FDA Approved |
| Glycine-Proline-Glutamate (GPE) | Compoundable (Under Review) | Animal Studies |
| GnRH Agonist Peptides Leuprolide, Lupron | FDA-Approved (Prescription) | FDA Approved |
| Gonadorelin | FDA-Approved (Prescription) | FDA Approved |
| HCG (Human Chorionic Gonadotropin) | FDA-Approved (Prescription) | FDA Approved |
| Hepcidin | Compoundable (Under Review) | Human Trials |
| Hexarelin | Compoundable (Under Review) | Human Trials |
| HGH Fragment 176-191 | Compoundable (Under Review) | Animal Studies |
| Humanin | Compoundable (Under Review) | Human Trials |
| IGF-1 DES | Compoundable (Under Review) | Preclinical |
| IGF-1 LR3 | Compoundable (Under Review) | Human Trials |
| Ipamorelin | Not Compoundable (Voted Against) | Human Trials |
| Irisin | Compoundable (Under Review) | Human Trials |
| Khavinson Peptide Bioregulators | Compoundable (Under Review) | Human Trials |
| Kisspeptin | Not Compoundable (Voted Against) | Human Trials |
| Kisspeptin-54 (Metastin) | Compoundable (Under Review) | Human Trials |
| Klotho Peptide | Compoundable (Under Review) | Human Trials |
| KPV | Compoundable (Under Review) | Animal Studies |
| Lactoferricin | Compoundable (Under Review) | Human Trials |
| Larazotide Acetate | Compoundable (Under Review) | Human Trials |
| Liraglutide Victoza, Saxenda | FDA-Approved (Prescription) | FDA Approved |
| Livagen | Compoundable (Under Review) | Animal Studies |
| LL-37 | Compoundable (Under Review) | Human Trials |
| Maridebart Cafraglutide (MariTide) | Compoundable (Under Review) | Human Trials |
| Matrixyl (Palmitoyl Pentapeptide-4) | Compoundable (Under Review) | Animal Studies |
| Mazdutide | Compoundable (Under Review) | Human Trials |
| Mechano Growth Factor (MGF) MGF, IGF-1Ec | Compoundable (Under Review) | Human Trials |
| Melanocyte-Stimulating Hormone (α-MSH) | Compoundable (Under Review) | Human Trials |
| Melanotan I (Afamelanotide) | Compoundable (Under Review) | Human Trials |
| Melanotan II | Compoundable (Under Review) | Human Trials |
| MK-677 (Ibutamoren) | Not Compoundable (Voted Against) | Human Trials |
| MOTS-c | Compoundable (Under Review) | Human Trials |
| Myostatin Inhibitor Peptides | Compoundable (Under Review) | Human Trials |
| N-Acetyl Selank | Compoundable (Under Review) | Preclinical |
| N-Acetyl Semax | Compoundable (Under Review) | Preclinical |
| Neuromedin U | Compoundable (Under Review) | Animal Studies |
| Neuropeptide Y (NPY) | Compoundable (Under Review) | Human Trials |
| NMN (Nicotinamide Mononucleotide) | Compoundable (Under Review) | Human Trials |
| Noopept (GVS-111) | Compoundable (Under Review) | Human Trials |
| Orexin-A (Hypocretin-1) | Compoundable (Under Review) | Human Trials |
| Osteocalcin (Uncarboxylated) | Compoundable (Under Review) | Human Trials |
| Oxytocin | FDA-Approved (Prescription) | FDA Approved |
| P21 (NSI-189 Peptide Fragment) | Compoundable (Under Review) | Animal Studies |
| p28 (Azurin Peptide Fragment) | Compoundable (Under Review) | Human Trials |
| p53 Peptides | Compoundable (Under Review) | Human Trials |
| Palmitoyl Tripeptide-1 | Compoundable (Under Review) | Human Trials |
| Palmitoyl Tripeptide-5 | Compoundable (Under Review) | Human Trials |
| Pasireotide (SOM230) | FDA-Approved (Prescription) | FDA Approved |
| PEG-MGF | Compoundable (Under Review) | Preclinical |
| Pemvidutide | Compoundable (Under Review) | Human Trials |
| Pentagastrin | Compoundable (Under Review) | Human Trials |
| Pentosan Polysulfate (PPS) | FDA-Approved (Prescription) | FDA Approved |
| Pinealon | Compoundable (Under Review) | Animal Studies |
| Plerixafor | FDA-Approved (Prescription) | FDA Approved |
| Pramlintide (Symlin) | FDA-Approved (Prescription) | FDA Approved |
| Protegrin-1 | Compoundable (Under Review) | Human Trials |
| PT-141 (Bremelanotide) Bremelanotide, Vyleesi | FDA-Approved (Prescription) | FDA Approved |
| Rapamycin/mTOR Peptide Inhibitors | Compoundable (Under Review) | Human Trials |
| Relaxin-2 (Serelaxin) | Compoundable (Under Review) | Human Trials |
| Retatrutide | Compoundable (Under Review) | Human Trials |
| Selank | Compoundable (Under Review) | Human Trials |
| Semaglutide Ozempic, Wegovy | FDA-Approved (Prescription) | FDA Approved |
| Semax | Compoundable (Under Review) | Human Trials |
| Senolytic Peptide Conjugates | Compoundable (Under Review) | Animal Studies |
| Sermorelin | Compoundable (Under Review) | Human Trials |
| Setmelanotide | FDA-Approved (Prescription) | FDA Approved |
| SHLP2 (Small Humanin-Like Peptide 2) | Compoundable (Under Review) | Animal Studies |
| SHLP6 | Compoundable (Under Review) | Animal Studies |
| SNAP-8 (Acetyl Octapeptide-3) | Compoundable (Under Review) | Human Trials |
| SS-31 (Elamipretide) | Compoundable (Under Review) | Human Trials |
| Substance P | Compoundable (Under Review) | Human Trials |
| Survodutide | Compoundable (Under Review) | Human Trials |
| TA-65 (Cycloastragenol) | Compoundable (Under Review) | Preclinical |
| TB-500 | Compoundable (Under Review) | Human Trials |
| Teixobactin | Compoundable (Under Review) | Animal Studies |
| Tesamorelin Egrifta | FDA-Approved (Prescription) | FDA Approved |
| Tesofensine | Compoundable (Under Review) | Human Trials |
| Tetracosactide (Cosyntropin/Synacthen) | Compoundable (Under Review) | Human Trials |
| Thymalfasin (Thymosin Alpha-1 Synthetic) | Compoundable (Under Review) | Human Trials |
| Thymalin | Compoundable (Under Review) | Human Trials |
| Thymogen | Compoundable (Under Review) | Human Trials |
| Thymopoietin | Compoundable (Under Review) | Human Trials |
| Thymosin Alpha-1 | Not Compoundable (Voted Against) | Human Trials |
| Thymosin Beta-10 | Compoundable (Under Review) | Human Trials |
| Thymosin Beta-4 | Compoundable (Under Review) | Human Trials |
| Thymulin (FTS/ZnFTS) | Compoundable (Under Review) | Animal Studies |
| Tirzepatide Mounjaro, Zepbound | FDA-Approved (Prescription) | FDA Approved |
| TRIM (Thyrotropin-Releasing Hormone Analog) | Compoundable (Under Review) | Preclinical |
| Triptorelin | FDA-Approved (Prescription) | FDA Approved |
| Trofinetide (Daybue) | FDA-Approved (Prescription) | FDA Approved |
| Ularitide (Urodilatin) | Compoundable (Under Review) | Human Trials |
| Vesugen | Compoundable (Under Review) | Human Trials |
| Vilon | Compoundable (Under Review) | Human Trials |
| VIP (Vasoactive Intestinal Peptide) | Compoundable (Under Review) | Human Trials |
| α-AIB (Alpha-Aminoisobutyric Acid Peptides) | Compoundable (Under Review) | Animal Studies |
Each compound links to a full research page carrying the PSI evidence assessment, mechanism of action, safety profile, regulatory status, and indexed study references.
The library includes non-peptide compounds studied in peptide research contexts, such as MK-677 (ibutamoren), with a scope note on each compound page.
Sources: PubMed, Federal Register, FDA advisory committee records. Full methodology and editorial independence policy at Editorial Standards.
Medical Disclaimer
This content is for educational and informational purposes only and does not constitute medical advice. The information presented reflects published research as indexed by PSI and should not be used to make treatment decisions. Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment.