# Know Your Peptide > Know Your Peptide (KYP) is the definitive research reference for peptide compounds -- covering mechanisms, dosing, side effects, clinical research summaries, vendor analysis, and stack guides for 167+ peptides. All content is written from peer-reviewed primary literature and reviewed by credentialed researchers. ## About - [Peptide Database](https://knowyourpeptide.com/peptides): Searchable directory of 167+ research peptide profiles with mechanisms, side effects, and clinical evidence summaries - [Dose Calculator](https://knowyourpeptide.com/calculator): Reconstitution calculator -- IU and mL output for any vial size and target dose - [Stack Builder](https://knowyourpeptide.com/stack-builder): Build and share custom research peptide stacks - [Peptide Compare](https://knowyourpeptide.com/compare): Side-by-side comparison tool for any two peptides - [Vendor Directory](https://knowyourpeptide.com/vendors): Verified vendor listings with independent ratings and peptide-level availability - [Glossary](https://knowyourpeptide.com/glossary): Definitions for peptide science terminology ## Publisher Know Your Peptide is published by KnowYourPeptide LLC, a registered US company. - Legal entity: KnowYourPeptide LLC - Registered address: 8260 S Eastern Ave, Suite 200, Las Vegas, NV 89123, United States - Contact: contact@knowyourpeptide.com - Facebook: https://www.facebook.com/knowyourpeptide - YouTube: https://www.youtube.com/@knowyourpeptide - Skool community: https://www.skool.com/@knowyour-peptide-7076 - X: https://twitter.com/knowyourpeptide ## Editorial Team Content is written and reviewed by named contributors with published credentials and defined review scopes. Review process: https://knowyourpeptide.com/editorial-standards - [Dr. James T. Walker, PhD](https://knowyourpeptide.com/authors/james-walker): Research Director & Co-Founder - [Ashish Kumar](https://knowyourpeptide.com/authors/ashish-kumar): Peptide Chemistry Reviewer ## Peptide Profiles - [ABP-7](https://knowyourpeptide.com/peptides/abp-7) - [ACE-031](https://knowyourpeptide.com/peptides/ace-031) - [ACTH 1-24 (Cosyntropin)](https://knowyourpeptide.com/peptides/acth-1-24-cosyntropin) - [AHK-Cu](https://knowyourpeptide.com/peptides/ahk-cu) - [AICAR](https://knowyourpeptide.com/peptides/aicar) - [ANP (Atrial Natriuretic Peptide)](https://knowyourpeptide.com/peptides/anp-atrial-natriuretic-peptide) - [AOD-9604](https://knowyourpeptide.com/peptides/aod-9604) - [ARA-290 (Cibinetide)](https://knowyourpeptide.com/peptides/ara-290) - [Abaloparatide](https://knowyourpeptide.com/peptides/abaloparatide) - [Adipotide (FTPP)](https://knowyourpeptide.com/peptides/adipotide) - [Alpha-MSH](https://knowyourpeptide.com/peptides/alpha-msh) - [Amylin](https://knowyourpeptide.com/peptides/amylin) - [Angiotensin 1-7 (Ang 1-7)](https://knowyourpeptide.com/peptides/angiotensin-1-7) - [Argireline](https://knowyourpeptide.com/peptides/argireline) - [B7-33](https://knowyourpeptide.com/peptides/b7-33) - [BPC-157](https://knowyourpeptide.com/peptides/bpc-157) - [BPC-157 & TB-500 & GHK-Cu Blend](https://knowyourpeptide.com/peptides/bpc-157-tb-500-ghk-cu-blend) - [BPC-157 & TB-500 Blend](https://knowyourpeptide.com/peptides/bpc-157-tb-500-blend) - [Beta-Endorphin](https://knowyourpeptide.com/peptides/beta-endorphin) - [Bolamin](https://knowyourpeptide.com/peptides/bolamin) - [Bradykinin](https://knowyourpeptide.com/peptides/bradykinin) - [Bronchogen](https://knowyourpeptide.com/peptides/bronchogen) - [CGRP](https://knowyourpeptide.com/peptides/cgrp) - [CJC-1295](https://knowyourpeptide.com/peptides/cjc-1295) - [CJC-1295 & GHRP-2 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/cjc-1295-ghrp-2-ipamorelin-blend) - [CJC-1295 & GHRP-2 Blend](https://knowyourpeptide.com/peptides/cjc-1295-ghrp-2-blend) - [CJC-1295 & GHRP-6 Blend](https://knowyourpeptide.com/peptides/cjc-1295-ghrp-6-blend) - [CJC-1295 & Hexarelin Blend](https://knowyourpeptide.com/peptides/cjc-1295-hexarelin-blend) - [CJC-1295 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/cjc-1295-ipamorelin-blend) - [CJC-1295 DAC](https://knowyourpeptide.com/peptides/cjc-1295-dac) - [Cagrilintide](https://knowyourpeptide.com/peptides/cagrilintide) - [Cardiogen](https://knowyourpeptide.com/peptides/cardiogen) - [Carnosine](https://knowyourpeptide.com/peptides/carnosine) - [Cartalax](https://knowyourpeptide.com/peptides/cartalax) - [Cerebrolysin](https://knowyourpeptide.com/peptides/cerebrolysin) - [Cerluten](https://knowyourpeptide.com/peptides/cerluten) - [Cetrorelix](https://knowyourpeptide.com/peptides/cetrorelix) - [Chitomur](https://knowyourpeptide.com/peptides/chitomur) - [Chonluten](https://knowyourpeptide.com/peptides/chonluten) - [Cortagen](https://knowyourpeptide.com/peptides/cortagen) - [Crystagen](https://knowyourpeptide.com/peptides/crystagen) - [DSIP (Delta Sleep-Inducing Peptide)](https://knowyourpeptide.com/peptides/dsip) - [Decapeptide-12](https://knowyourpeptide.com/peptides/decapeptide-12) - [Degarelix](https://knowyourpeptide.com/peptides/degarelix) - [Dermorphin](https://knowyourpeptide.com/peptides/dermorphin) - [Dihexa](https://knowyourpeptide.com/peptides/dihexa) - [Endoluten](https://knowyourpeptide.com/peptides/endoluten) - [Epitalon (Epithalon)](https://knowyourpeptide.com/peptides/epitalon) - [Exenatide](https://knowyourpeptide.com/peptides/exenatide) - [FGL Peptide](https://knowyourpeptide.com/peptides/fgl-peptide) - [FOXO4-DRI](https://knowyourpeptide.com/peptides/foxo4-dri) - [Follistatin-344](https://knowyourpeptide.com/peptides/follistatin-344) - [Fragment 176-191](https://knowyourpeptide.com/peptides/fragment-176-191) - [Fragment 176-191 & CJC-1295 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/fragment-176-191-cjc-1295-ipamorelin-blend) - [Fragment 176-191 & Mod GRF 1-29 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/fragment-176-191-mod-grf-ipamorelin-blend) - [GHK (Tripeptide-1)](https://knowyourpeptide.com/peptides/ghk-tripeptide-1) - [GHK-Cu (Copper Peptide)](https://knowyourpeptide.com/peptides/ghk-cu) - [GHRP-2](https://knowyourpeptide.com/peptides/ghrp-2) - [GHRP-6](https://knowyourpeptide.com/peptides/ghrp-6) - [GIP (Glucose-dependent Insulinotropic Polypeptide)](https://knowyourpeptide.com/peptides/gip-glucose-insulinotropic-polypeptide) - [GLP-2](https://knowyourpeptide.com/peptides/glp-2) - [Galanin](https://knowyourpeptide.com/peptides/galanin) - [Ghrelin](https://knowyourpeptide.com/peptides/ghrelin) - [Glucagon](https://knowyourpeptide.com/peptides/glucagon) - [Gonadorelin](https://knowyourpeptide.com/peptides/gonadorelin) - [Hexapeptide-11](https://knowyourpeptide.com/peptides/hexapeptide-11) - [Hexarelin](https://knowyourpeptide.com/peptides/hexarelin) - [Humanin](https://knowyourpeptide.com/peptides/humanin) - [IGF-1 DES](https://knowyourpeptide.com/peptides/igf-1-des) - [IGF-1 LR3](https://knowyourpeptide.com/peptides/igf-1-lr3) - [Ipamorelin](https://knowyourpeptide.com/peptides/ipamorelin) - [KPV](https://knowyourpeptide.com/peptides/kpv) - [Kisspeptin](https://knowyourpeptide.com/peptides/kisspeptin) - [Klotho Peptide](https://knowyourpeptide.com/peptides/klotho-peptide) - [LEAP-2](https://knowyourpeptide.com/peptides/leap-2) - [LL-37](https://knowyourpeptide.com/peptides/ll-37) - [Larazotide Acetate (AT-1001)](https://knowyourpeptide.com/peptides/larazotide-acetate) - [Leuprolide (Leuprorelin)](https://knowyourpeptide.com/peptides/leuprolide) - [Lipopeptide (Cosmetic)](https://knowyourpeptide.com/peptides/lipopeptide) - [Liraglutide](https://knowyourpeptide.com/peptides/liraglutide) - [Livagen](https://knowyourpeptide.com/peptides/livagen) - [MGF](https://knowyourpeptide.com/peptides/mgf) - [MOTS-c](https://knowyourpeptide.com/peptides/mots-c) - [Melanotan I](https://knowyourpeptide.com/peptides/melanotan-i) - [Melanotan II](https://knowyourpeptide.com/peptides/melanotan-ii) - [Mod GRF 1-29](https://knowyourpeptide.com/peptides/mod-grf-1-29) - [Mod GRF 1-29 & GHRP-2 Blend](https://knowyourpeptide.com/peptides/mod-grf-ghrp-2-blend) - [Mod GRF 1-29 & GHRP-6 Blend](https://knowyourpeptide.com/peptides/mod-grf-ghrp-6-blend) - [Mod GRF 1-29 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/mod-grf-ipamorelin-blend) - [Myristoyl Pentapeptide-17](https://knowyourpeptide.com/peptides/myristoyl-pentapeptide-17) - [N-Acetyl Selank](https://knowyourpeptide.com/peptides/n-acetyl-selank) - [N-Acetyl Semax](https://knowyourpeptide.com/peptides/n-acetyl-semax) - [NAD+](https://knowyourpeptide.com/peptides/nad-plus) - [NMN (Nicotinamide Mononucleotide)](https://knowyourpeptide.com/peptides/nmn-nicotinamide-mononucleotide) - [NR (Nicotinamide Riboside)](https://knowyourpeptide.com/peptides/nr-nicotinamide-riboside) - [Neuropeptide Y](https://knowyourpeptide.com/peptides/neuropeptide-y) - [Neurotensin](https://knowyourpeptide.com/peptides/neurotensin) - [Nociceptin (Orphanin FQ)](https://knowyourpeptide.com/peptides/nociceptin-orphanin-fq) - [Nonapeptide-1](https://knowyourpeptide.com/peptides/nonapeptide-1) - [Orexin-A](https://knowyourpeptide.com/peptides/orexin-a) - [Orexin-B (Hypocretin-2)](https://knowyourpeptide.com/peptides/orexin-b) - [Ovagen](https://knowyourpeptide.com/peptides/ovagen) - [Oxyntomodulin](https://knowyourpeptide.com/peptides/oxyntomodulin) - [Oxytocin](https://knowyourpeptide.com/peptides/oxytocin) - [P21](https://knowyourpeptide.com/peptides/p21) - [PACAP-38](https://knowyourpeptide.com/peptides/pacap-38) - [PE-22-28](https://knowyourpeptide.com/peptides/pe-22-28) - [PEG-MGF](https://knowyourpeptide.com/peptides/peg-mgf) - [PNC-27](https://knowyourpeptide.com/peptides/pnc-27) - [PT-141 (Bremelanotide)](https://knowyourpeptide.com/peptides/pt-141) - [PTD-DBM](https://knowyourpeptide.com/peptides/ptd-dbm) - [Pal-AHK (Palmitoyl Tripeptide-3)](https://knowyourpeptide.com/peptides/pal-ahk) - [Pal-GHK (Palmitoyl Tripeptide-1)](https://knowyourpeptide.com/peptides/pal-ghk) - [Palmitoyl Pentapeptide-4 (Matrixyl)](https://knowyourpeptide.com/peptides/palmitoyl-pentapeptide-4) - [Palmitoyl Tetrapeptide-7](https://knowyourpeptide.com/peptides/palmitoyl-tetrapeptide-7) - [Pancragen](https://knowyourpeptide.com/peptides/pancragen) - [Pentapeptide-18 (Leuphasyl)](https://knowyourpeptide.com/peptides/pentapeptide-18) - [Peptide YY (PYY 3-36)](https://knowyourpeptide.com/peptides/peptide-yy) - [Peptide YY Analogue (Cagrilintide Component)](https://knowyourpeptide.com/peptides/glp-1-native) - [Pielotax](https://knowyourpeptide.com/peptides/pielotax) - [Pinealon](https://knowyourpeptide.com/peptides/pinealon) - [Pramlintide](https://knowyourpeptide.com/peptides/pramlintide) - [Prostamax](https://knowyourpeptide.com/peptides/prostamax) - [Retatrutide](https://knowyourpeptide.com/peptides/retatrutide) - [SHLP-2 (Small Humanin-Like Peptide 2)](https://knowyourpeptide.com/peptides/shlp-2) - [SS-31 (Elamipretide)](https://knowyourpeptide.com/peptides/ss-31) - [Selank](https://knowyourpeptide.com/peptides/selank) - [Semaglutide](https://knowyourpeptide.com/peptides/semaglutide) - [Semax](https://knowyourpeptide.com/peptides/semax) - [Sermorelin](https://knowyourpeptide.com/peptides/sermorelin) - [Sermorelin & GHRP-2 Blend](https://knowyourpeptide.com/peptides/sermorelin-ghrp-2-blend) - [Sermorelin & GHRP-6 & GHRP-2 Triple Blend](https://knowyourpeptide.com/peptides/sermorelin-ghrp-6-ghrp-2-blend) - [Sermorelin & GHRP-6 Blend](https://knowyourpeptide.com/peptides/sermorelin-ghrp-6-blend) - [Sermorelin & Ipamorelin Blend](https://knowyourpeptide.com/peptides/sermorelin-ipamorelin-blend) - [Sigumir](https://knowyourpeptide.com/peptides/sigumir) - [Snap-8](https://knowyourpeptide.com/peptides/snap-8) - [Somatostatin](https://knowyourpeptide.com/peptides/somatostatin) - [Somatropin (rHGH)](https://knowyourpeptide.com/peptides/somatropin-rhgh) - [Substance P](https://knowyourpeptide.com/peptides/substance-p) - [Suprefort](https://knowyourpeptide.com/peptides/suprefort) - [Syn-Ake](https://knowyourpeptide.com/peptides/syn-ake) - [Syn-Coll](https://knowyourpeptide.com/peptides/syn-coll) - [TB-500 (Thymosin Beta-4)](https://knowyourpeptide.com/peptides/tb-500) - [TRH](https://knowyourpeptide.com/peptides/trh) - [Taxorest](https://knowyourpeptide.com/peptides/taxorest) - [Teriparatide (PTH 1-34)](https://knowyourpeptide.com/peptides/teriparatide-pth-1-34) - [Tesamorelin](https://knowyourpeptide.com/peptides/tesamorelin) - [Tesamorelin & CJC-1295 & Ipamorelin Blend](https://knowyourpeptide.com/peptides/tesamorelin-cjc-1295-ipamorelin-blend) - [Tesamorelin & Ipamorelin Blend](https://knowyourpeptide.com/peptides/tesamorelin-ipamorelin-blend) - [Testagen](https://knowyourpeptide.com/peptides/testagen) - [Tetrapeptide-21](https://knowyourpeptide.com/peptides/tetrapeptide-21) - [Thymagen](https://knowyourpeptide.com/peptides/thymagen) - [Thymalin](https://knowyourpeptide.com/peptides/thymalin) - [Thymosin Alpha-1](https://knowyourpeptide.com/peptides/thymosin-alpha-1) - [Thymosin Beta-4 (Full Protein)](https://knowyourpeptide.com/peptides/thymosin-beta-4-full) - [Thyrotropin](https://knowyourpeptide.com/peptides/thyrotropin) - [Tirzepatide](https://knowyourpeptide.com/peptides/tirzepatide) - [Tripeptide-10 Citrulline (Decorinyl)](https://knowyourpeptide.com/peptides/tripeptide-10-citrulline) - [Tripeptide-29](https://knowyourpeptide.com/peptides/tripeptide-29) - [Triptorelin](https://knowyourpeptide.com/peptides/triptorelin) - [Urocortin](https://knowyourpeptide.com/peptides/urocortin) - [VIP](https://knowyourpeptide.com/peptides/vip) - [Vasopressin](https://knowyourpeptide.com/peptides/vasopressin) - [Vesilut](https://knowyourpeptide.com/peptides/vesilut) - [Vesugen](https://knowyourpeptide.com/peptides/vesugen) - [Vialox](https://knowyourpeptide.com/peptides/vialox) - [Vilon](https://knowyourpeptide.com/peptides/vilon) ## Blog: Research - [Retatrutide in 2026: The Triple Agonist That's Rewriting Weight Loss Science](https://knowyourpeptide.com/blog/retatrutide-triple-agonist-research-2026-what-the-studies-show): Retatrutide produced 24.2% body weight loss in Phase 2 — the largest ever recorded in an obesity drug trial. Here's what… - [Peptides for Fat Loss: GLP-1, Fragment 176-191, AOD-9604, and Growth Hormone Research](https://knowyourpeptide.com/blog/peptides-for-fat-loss-research-glp1-fragment-aod-growth-hormone): Multiple peptide classes address fat loss through different mechanisms: GLP-1 agonists (appetite suppression), GH fragme… - [Collagen Peptides: What the Science Actually Shows](https://knowyourpeptide.com/blog/collagen-peptides-scientific-research-evidence): Collagen peptide supplements are among the most commercially successful peptide products, but what does the peer-reviewe… - [LL-37 (Cathelicidin): Antimicrobial Peptide, Wound Healing, and Immune Research](https://knowyourpeptide.com/blog/ll-37-cathelicidin-antimicrobial-wound-healing-immune-research): LL-37 is the only human cathelicidin antimicrobial peptide — a component of the innate immune system that kills bacteria… - [KPV Peptide: Gut Healing, Anti-Inflammatory Research, and Colitis Models](https://knowyourpeptide.com/blog/kpv-peptide-gut-healing-anti-inflammatory-colitis-research): KPV (Lys-Pro-Val) is a tripeptide derived from the C-terminus of alpha-MSH with potent anti-inflammatory effects in gut … - [IGF-1 LR3: Muscle Satellite Cell Activation, Anabolic Signaling, and Research Data](https://knowyourpeptide.com/blog/igf-1-lr3-muscle-satellite-cell-anabolic-research): IGF-1 LR3 is a long-acting analogue of insulin-like growth factor-1 with reduced IGF-binding protein affinity, producing… - [Matrixyl: Palmitoyl Tripeptide-1, Palmitoyl Pentapeptide-4, and Collagen Research](https://knowyourpeptide.com/blog/matrixyl-palmitoyl-tripeptide-collagen-skin-research): Matrixyl is a brand name for palmitoyl peptide compounds — primarily Matrixyl (Pal-GHK) and Matrixyl 3000 (Pal-GHK + Pal… - [Argireline (Acetyl Hexapeptide-3): Mechanism, Research Evidence, and Skincare Applications](https://knowyourpeptide.com/blog/argireline-acetyl-hexapeptide-3-wrinkle-reduction-research): Argireline (Acetyl Hexapeptide-3) is a SNAP-25-mimicking peptide that inhibits neurotransmitter release at the neuromusc… - [Thymosin Alpha-1: Immune Modulation, Antiviral Activity, and Research Applications](https://knowyourpeptide.com/blog/thymosin-alpha-1-immune-modulation-antiviral-research): Thymosin Alpha-1 (Tα1) is a 28-amino acid thymic peptide with documented immune-stimulating effects in viral infection, … - [GHRP-2: Growth Hormone Secretagogue Research Profile and Pharmacology](https://knowyourpeptide.com/blog/ghrp-2-growth-hormone-releasing-peptide-research-profile): GHRP-2 is a synthetic hexapeptide GHS-R1a agonist with among the highest GH pulse amplitudes of any research peptide. Th… - [Ipamorelin: Research Profile, Pharmacology, and GH Secretagogue Effects](https://knowyourpeptide.com/blog/ipamorelin-growth-hormone-secretagogue-research-profile): Ipamorelin is the most selective synthetic GHS-R1a agonist, producing robust GH pulses with minimal cortisol or prolacti… - [SS-31 (Elamipretide): Mitochondrial Research in Aging Models](https://knowyourpeptide.com/blog/ss-31-elamipretide-mitochondrial-research-aging): SS-31 (Elamipretide) is a mitochondria-targeted tetrapeptide that associates with cardiolipin in the inner mitochondrial… - [Tirzepatide vs Semaglutide: Comparing GLP-1 Receptor Agonist Research](https://knowyourpeptide.com/blog/tirzepatide-vs-semaglutide-glp-1-receptor-agonist-research-comparison): Semaglutide (GLP-1 RA) and tirzepatide (GIP/GLP-1 dual agonist) have transformed obesity and diabetes research. This art… - [Ovagen: Hepatic Cell Research and Liver Aging Models](https://knowyourpeptide.com/blog/ovagen-peptides-cellular-aging-liver-research): Ovagen (EAEN) is a short tetrapeptide from Khavinson's program originally derived from liver tissue, now studied for pot… - [Palmitoyl Tetrapeptide-7: Dermal Cell Research and Skin Biology](https://knowyourpeptide.com/blog/palmitoyl-tetrapeptide-7-dermal-cell-research-collagen-synthesis): Palmitoyl Tetrapeptide-7 (Pal-GQPR) is a lipopeptide developed for cosmetic research that suppresses pro-inflammatory IL… - [Cortagen: Neuronal Research in Cellular Aging and Stress Models](https://knowyourpeptide.com/blog/cortagen-potential-cellular-aging-stress-regeneration): Cortagen is a short tetrapeptide from Khavinson's research program, derived from the cerebral cortex. Research in neural… - [CJC-1295: Growth Hormone-Releasing Hormone Analogue Research](https://knowyourpeptide.com/blog/cjc-1295-growth-hormone-releasing-hormone-analogue-research): CJC-1295 is a modified GHRH analogue designed to resist enzymatic degradation. With DAC (Drug Affinity Complex) modifica… - [TB-500: Actin Regulation and Systemic Tissue Repair Research](https://knowyourpeptide.com/blog/tb-500-actin-regulation-tissue-repair-research): TB-500 is a synthetic fragment of Thymosin Beta-4, a ubiquitous intracellular actin-sequestering protein. Research shows… - [Epithalon: Telomere Research and Cellular Longevity Models](https://knowyourpeptide.com/blog/epithalon-telomere-research-cellular-longevity): Epithalon (AEDG) is a synthetic tetrapeptide derived from the pineal gland peptide epithalamin. Research shows it activa… - [KED Peptide: Research in Cellular Aging Models](https://knowyourpeptide.com/blog/ked-potential-actions-models-cellular-aging): KED (Lys-Glu-Asp) is a short tripeptide from the thymus found to influence gene expression in aging cell cultures. Resea… - [FOXO4-DRI: Research on Senescent Cell Interactions](https://knowyourpeptide.com/blog/foxo4-dri-peptide-potential-interactions-aged-cell-cultures): FOXO4-DRI is a D-amino acid retro-inverso peptide designed to disrupt the interaction between FOXO4 and p53 in senescent… - [MGF and IGF-1 Ec: Muscle Satellite Cell Activation and Repair Research](https://knowyourpeptide.com/blog/mgf-igf-1-ec-peptide-muscle-cell-research): Mechano Growth Factor (MGF) is a splice variant of IGF-1 produced locally in muscle in response to mechanical stress. Re… - [Sermorelin and Ipamorelin: The Research Case for Stack Synergy](https://knowyourpeptide.com/blog/sermorelin-ipamorelin-synergy-anabolism-research): Ipamorelin is the cleanest GHRP available for research, producing GH release with minimal cortisol or prolactin elevatio… - [The Sermorelin and GHRP-2 Combination: GH and IGF-1 Synergy in Research](https://knowyourpeptide.com/blog/sermorelin-ghrp-2-synergistic-potential-growth-hormone-igf-1): When sermorelin (a GHRH analogue) and GHRP-2 (a ghrelin mimetic) are combined, research shows a synergistic amplificatio… - [Sermorelin and GH-Producing Cells: A Research Overview](https://knowyourpeptide.com/blog/sermorelin-potential-interactions-hormone-producing-cells): Sermorelin is a synthetic analogue of growth hormone-releasing hormone (GHRH). This review examines how it interacts wit… - [BPC-157: Mechanisms of Tissue Repair and Gastrointestinal Healing](https://knowyourpeptide.com/blog/bpc-157-mechanisms-tissue-repair-gastrointestinal-healing): An in-depth look at the cellular and molecular mechanisms by which BPC-157 promotes healing in tendon, ligament, gut, an… ## Blog: Dosage Guide - [Retatrutide Dosage Guide: Trial Doses, Escalation Math and Volume Conversion](https://knowyourpeptide.com/blog/retatrutide-dosing-guide): The exact retatrutide dose arms studied in phase 2 and what each delivered, plus mg to syringe unit conversion, worked v… - [Hexarelin Dosage Guide: Reconstitution, Injection Volumes, and Research Protocol](https://knowyourpeptide.com/blog/hexarelin-dosage-guide-reconstitution-injection-volumes-protocol): Practical guide to hexarelin vial reconstitution, injection volume tables, standard research dosing for GH secretagogue … - [MK-677 (Ibutamoren) Dosage Guide: Oral Dosing, Timing, and Research Protocol](https://knowyourpeptide.com/blog/mk-677-ibutamoren-dosage-guide-oral-timing-research-protocol): Complete guide to MK-677 oral dosing protocols, timing considerations, standard research dose ranges, and cycle guidance… - [Tesamorelin Dosage Guide: Reconstitution, Injection Volumes, and Research Protocol](https://knowyourpeptide.com/blog/tesamorelin-dosage-guide-reconstitution-injection-volumes-protocol): Complete guide to tesamorelin vial reconstitution, injection volume calculation, standard research dosing for visceral f… - [AOD-9604 Dosage Guide: Reconstitution, Injection Volumes, and Fat Loss Protocol](https://knowyourpeptide.com/blog/aod-9604-dosage-guide-reconstitution-injection-volumes-protocol): Practical guide to AOD-9604 vial reconstitution, injection volume calculation, standard research dosing for lipolysis an… - [Epithalon Dosage Guide: Reconstitution, Injection Volumes, and Anti-Aging Protocol](https://knowyourpeptide.com/blog/epithalon-dosage-guide-reconstitution-injection-volumes-protocol): Complete guide to Epithalon vial reconstitution, injection volume tables, standard research dosing for telomere lengthen… - [Semax Dosage Guide: Nasal and Injection Administration, Reconstitution, and Dosing Protocol](https://knowyourpeptide.com/blog/semax-dosage-guide-nasal-injection-reconstitution-protocol): Practical guide to Semax reconstitution and administration via intranasal drops or subcutaneous injection, with dose tab… - [Selank Dosage Guide: Reconstitution, Nasal vs Injection Protocols, and Dosing Tables](https://knowyourpeptide.com/blog/selank-dosage-guide-reconstitution-nasal-injection-protocols): Complete guide to Selank reconstitution for intranasal and subcutaneous administration, injection volume tables, standar… - [PT-141 (Bremelanotide) Dosage Guide: Reconstitution and Research Protocol](https://knowyourpeptide.com/blog/pt-141-bremelanotide-dosage-guide-reconstitution-protocol): Practical guide to PT-141 vial reconstitution, injection volume tables, standard research dosing for sexual dysfunction … - [Melanotan II Dosage Guide: Reconstitution, Injection Volumes, and Research Protocol](https://knowyourpeptide.com/blog/melanotan-ii-dosage-guide-reconstitution-injection-volumes): Research guide to Melanotan II vial reconstitution, injection volume calculation, standard dosing protocols for tanning … - [Semaglutide Dosage Guide: Reconstitution, Dose Escalation, and Injection Protocol](https://knowyourpeptide.com/blog/semaglutide-dosage-guide-reconstitution-escalation-injection-protocol): Research guide to semaglutide vial reconstitution, structured dose escalation tables, injection volume calculation, and … - [Tirzepatide Dosage Guide: Reconstitution, Injection Volumes, and Escalation Protocol](https://knowyourpeptide.com/blog/tirzepatide-dosage-guide-reconstitution-injection-escalation): Research guide to tirzepatide vial reconstitution, dose escalation tables, injection volume calculation, and standard ad… - [CJC-1295 Dosage Guide: Reconstitution, Injection Volume Tables, and Protocol Guide](https://knowyourpeptide.com/blog/cjc-1295-dosage-guide-reconstitution-injection-volumes-protocol): Practical guide to CJC-1295 (Mod GRF 1-29 and with DAC) reconstitution, injection volume calculation, and standard resea… - [Ipamorelin Dosage Guide: Vial Reconstitution, Injection Volumes, and GH Protocol](https://knowyourpeptide.com/blog/ipamorelin-dosage-guide-reconstitution-injection-volumes-protocol): Step-by-step guide to ipamorelin reconstitution, injection volume calculations, and standard research dosing protocols f… - [Sermorelin Dosage Guide: Reconstitution, Dose Calculator, and Injection Protocol](https://knowyourpeptide.com/blog/sermorelin-dosage-guide-reconstitution-injection-protocol): Complete guide to sermorelin vial reconstitution, injection volume tables, standard research dosage ranges, and timing p… - [TB-500 Dosage Guide: Vial Reconstitution, Dosing Tables, and Research Protocol](https://knowyourpeptide.com/blog/tb-500-dosage-guide-reconstitution-dosing-tables-protocol): Practical guide to TB-500 vial reconstitution, injection volume tables, standard research dose ranges, and administratio… - [BPC-157 Dosage Guide: Reconstitution, Dosing Tables, and Injection Protocol](https://knowyourpeptide.com/blog/bpc-157-dosage-guide-reconstitution-injection-protocol): Complete practical guide to BPC-157 vial reconstitution, injection volume calculation, standard research dosing ranges, … - [GHK-Cu Dosage Guide: Vial Reconstitution, Injection Volumes, and Research Protocols](https://knowyourpeptide.com/blog/ghk-cu-dosage-guide-reconstitution-injection-volumes): A practical guide to reconstituting GHK-Cu vials, calculating injection volumes, and understanding standard research dos… ## Blog: Comparison - [Retatrutide vs Semaglutide: Three Receptors Against One](https://knowyourpeptide.com/blog/retatrutide-vs-semaglutide): A triple agonist against the GLP-1 reference standard. Efficacy, evidence weight, safety characterization and availabili… - [Retatrutide vs Tirzepatide: Triple Agonist Against Dual Agonist](https://knowyourpeptide.com/blog/retatrutide-vs-tirzepatide): Retatrutide adds a glucagon receptor to tirzepatide's GIP and GLP-1 targets. Mechanism comparison, honest cross-trial ca… - [Thymosin Beta-4 vs TB-500: Full Protein vs Bioactive Fragment Research](https://knowyourpeptide.com/blog/thymosin-beta-4-vs-tb-500-full-protein-vs-fragment-comparison): TB-500 is the synthetic analogue of the 17-amino acid bioactive domain of Thymosin Beta-4 (Tβ4). This comparison explain… - [Matrixyl vs Argireline: Different Peptide Mechanisms for Skin Aging Research](https://knowyourpeptide.com/blog/matrixyl-vs-argireline-skin-peptide-mechanism-comparison): Matrixyl (palmitoyl peptides) and Argireline (Acetyl Hexapeptide-3) are the two most studied cosmetic peptide categories… - [Semaglutide vs Liraglutide: GLP-1 Agonist Potency, Duration, and Clinical Outcomes](https://knowyourpeptide.com/blog/semaglutide-vs-liraglutide-glp-1-agonist-comparison): Semaglutide (Ozempic/Wegovy) and liraglutide (Victoza/Saxenda) are both GLP-1 receptor agonists, but semaglutide's album… - [NMN vs NR: Comparing NAD+ Precursor Bioavailability and Research Evidence](https://knowyourpeptide.com/blog/nmn-vs-nr-nad-precursor-bioavailability-research-comparison): NMN and NR are both NAD+ precursors that replenish declining nicotinamide adenine dinucleotide levels with aging. This c… - [Sermorelin vs HGH: Why Pituitary Stimulation Differs From Exogenous Growth Hormone](https://knowyourpeptide.com/blog/sermorelin-vs-hgh-pituitary-stimulation-vs-exogenous-growth-hormone): Sermorelin stimulates the pituitary to release its own GH; exogenous HGH replaces GH directly. These approaches produce … - [NAD+ vs Epithalon: Two Different Approaches to Cellular Aging Research](https://knowyourpeptide.com/blog/nad-plus-vs-epithalon-cellular-aging-longevity-comparison): NAD+ and Epithalon are both studied for anti-aging properties, but NAD+ works through sirtuin activation and energy meta… - [Epithalon vs MOTS-c: Comparing Longevity Peptide Research](https://knowyourpeptide.com/blog/epithalon-vs-mots-c-longevity-peptide-comparison): Epithalon and MOTS-c are both studied in aging research but through entirely different mechanisms: Epithalon activates t… - [Tesamorelin vs CJC-1295: Two GHRH Analogues With Different Clinical Footprints](https://knowyourpeptide.com/blog/tesamorelin-vs-cjc-1295-ghrh-analogue-clinical-comparison): Tesamorelin is FDA-approved for HIV-associated lipodystrophy with documented visceral fat reduction data; CJC-1295 (Mod … - [PT-141 vs Kisspeptin: Two Approaches to Sexual Function Research](https://knowyourpeptide.com/blog/pt-141-vs-kisspeptin-sexual-function-research-comparison): PT-141 (bremelanotide) and kisspeptin both increase sexual arousal in research models, but through completely different … - [Hexarelin vs GHRP-2: The Most Potent Growth Hormone Secretagogues Compared](https://knowyourpeptide.com/blog/hexarelin-vs-ghrp-2-potent-growth-hormone-secretagogue-comparison): Hexarelin and GHRP-2 are the two most potent GHSPs in terms of GH pulse amplitude, but hexarelin requires cycling due to… - [CJC-1295 With DAC vs Without DAC: Understanding the Critical Difference](https://knowyourpeptide.com/blog/cjc-1295-with-dac-vs-without-dac-research-comparison): CJC-1295 with DAC and CJC-1295 without DAC (Mod GRF 1-29) are the same peptide backbone with fundamentally different pha… - [GHK-Cu vs BPC-157: Two Different Approaches to Tissue Repair](https://knowyourpeptide.com/blog/ghk-cu-vs-bpc-157-tissue-repair-comparison-research): GHK-Cu and BPC-157 are both studied extensively for tissue repair, but they operate through entirely different mechanism… - [Melanotan I vs Melanotan II: Tanning Peptides Compared](https://knowyourpeptide.com/blog/melanotan-i-vs-melanotan-ii-tanning-peptide-comparison): Melanotan I and Melanotan II both stimulate melanogenesis via MC1R activation, but differ in their receptor selectivity,… - [Selank vs Semax: Comparing the Russian Nootropic Peptides](https://knowyourpeptide.com/blog/selank-vs-semax-nootropic-peptide-comparison-research): Selank and Semax are both nootropic peptides developed in Russia from the 1980s onward. They have distinct mechanisms — … - [Fragment 176-191 vs AOD-9604: The Fat-Loss Peptide Comparison](https://knowyourpeptide.com/blog/fragment-176-191-vs-aod-9604-fat-loss-peptide-comparison): Fragment 176-191 and AOD-9604 are both derived from the C-terminal region of human growth hormone and studied for fat-bu… - [CJC-1295 vs Sermorelin: GHRH Analogues Compared](https://knowyourpeptide.com/blog/cjc-1295-vs-sermorelin-ghrh-analogue-comparison-research): CJC-1295 and sermorelin are both GHRH analogues that stimulate pituitary GH release, but differ in half-life, DPP-IV res… - [Ipamorelin vs GHRP-6: Growth Hormone Selectivity vs Appetite Stimulation](https://knowyourpeptide.com/blog/ipamorelin-vs-ghrp-6-growth-hormone-appetite-research-comparison): Ipamorelin and GHRP-6 both stimulate GH release via GHS-R1a, but GHRP-6 has a pronounced appetite-stimulating effect via… - [Ipamorelin vs GHRP-2: Selecting the Right Growth Hormone Secretagogue](https://knowyourpeptide.com/blog/ipamorelin-vs-ghrp-2-growth-hormone-secretagogue-comparison): Ipamorelin and GHRP-2 are both ghrelin receptor agonists used to stimulate GH release, but they differ significantly in … - [BPC-157 vs TB-500: Mechanisms, Differences, and Research Comparison](https://knowyourpeptide.com/blog/bpc-157-vs-tb-500-healing-peptides-research-comparison): BPC-157 and TB-500 are the two most researched tissue-repair peptides. This comparison examines their distinct mechanism… ## Blog: Buying Guide - [How to Compare Peptide Vendors for Laboratory Research Without Chasing Rankings](https://knowyourpeptide.com/blog/how-to-compare-peptide-vendors-for-laboratory-research): A laboratory-procurement decision framework for comparing documentation, traceability, methods, and support—not a list o… - [How to Read a Peptide COA: What Independent Testing Can and Cannot Show](https://knowyourpeptide.com/blog/how-to-read-a-peptide-coa): A practical guide to batch-specific certificates of analysis, chromatograms, mass confirmation, method limits, and the q… - [Are Online Peptide Companies Legitimate? Research-Use-Only Red Flags to Check](https://knowyourpeptide.com/blog/are-online-peptide-companies-legitimate): How to evaluate online research-supplier claims without confusing marketing language, product documentation, or a COA wi… - [How to Evaluate a Peptide Company: A Research Documentation Checklist](https://knowyourpeptide.com/blog/how-to-evaluate-a-peptide-company): A research-use-only framework for comparing peptide supplier documentation: lot matching, analytical methods, identity c… - [Kylo Peptides Review: Published Lot COAs, the Koi Rebrand, and What the Membership Actually Saves](https://knowyourpeptide.com/blog/kylo-peptides-review): Kylo Peptides publishes a certificate for every lot, indexed by the number printed on the vial. We look at what is verif… - [Where to Buy GLP-3 (Retatrutide): Vendor Guide and What GLP-3 Actually Means](https://knowyourpeptide.com/blog/where-to-buy-glp-3-retatrutide): GLP-3 is a grey market nickname for retatrutide, not a real receptor class. What you are actually buying, how to read a … ## Blog: Bloodwork - [Retatrutide Bloodwork: The Biomarkers That Actually Track a Triple Agonist](https://knowyourpeptide.com/blog/retatrutide-bloodwork-biomarkers): Which labs to run on retatrutide and why a triple agonist needs wider monitoring than a pure GLP-1. Full testing timelin… ## Blog: Clinical Guide - [Tirzepatide: The Dual-Action Peptide Outperforming Everything in Metabolic Medicine](https://knowyourpeptide.com/blog/tirzepatide-dual-agonist-metabolic-health-research): Tirzepatide is a first-in-class dual GIP/GLP-1 receptor agonist that is producing weight loss results exceeding anything… - [Epithalon: The Telomere Peptide and Its Role in Longevity Research](https://knowyourpeptide.com/blog/epithalon-telomere-longevity-anti-aging-research): Epithalon is a synthetic tetrapeptide derived from the pineal gland. It activates telomerase, extends telomere length, a… - [Selank: The Nootropic Peptide for Anxiety and Mental Clarity](https://knowyourpeptide.com/blog/selank-anxiety-nootropic-peptide-research): Selank is a synthetic heptapeptide developed in Russia with a 30-year research history. It has anxiolytic, nootropic, an… - [CJC-1295: The Long-Acting GHRH Analogue Reshaping Growth Hormone Research](https://knowyourpeptide.com/blog/cjc-1295-growth-hormone-releasing-hormone-research): CJC-1295 is a modified form of growth hormone-releasing hormone that lasts days instead of minutes. This guide explains … - [Thymosin Alpha-1: The Immune-Optimizing Peptide Used Around the World](https://knowyourpeptide.com/blog/thymosin-alpha-1-immune-support-research-guide): Thymosin Alpha-1 is approved as a pharmaceutical treatment in over 35 countries for hepatitis B, hepatitis C, and immune… - [PT-141 (Bremelanotide): The Peptide That Works on the Brain, Not the Blood Vessels](https://knowyourpeptide.com/blog/pt-141-bremelanotide-sexual-health-research): PT-141 is the only FDA-approved treatment for sexual dysfunction that works through the central nervous system rather th… - [Ipamorelin: What This Anti-Aging Peptide Does and Why Researchers Are Interested](https://knowyourpeptide.com/blog/ipamorelin-anti-aging-growth-hormone-research): Ipamorelin is a selective growth hormone secretagogue with one of the cleanest safety profiles in its class. This articl… - [TB-500: The Recovery Peptide Athletes Are Talking About](https://knowyourpeptide.com/blog/tb-500-recovery-peptide-research-guide): TB-500 is a synthetic version of Thymosin Beta-4, a naturally occurring peptide involved in cell migration, wound healin… - [Semaglutide for Weight Loss: How the Most Talked-About Peptide Works](https://knowyourpeptide.com/blog/semaglutide-weight-loss-how-it-works): Semaglutide went from a diabetes drug to the most-prescribed weight loss treatment in history. This guide breaks down th… - [BPC-157 for Pain: What the Research Actually Says](https://knowyourpeptide.com/blog/bpc-157-for-pain-what-research-says): BPC-157 is one of the most researched peptides for musculoskeletal and visceral pain. Here is what the science says abou… ## Blog: Cycle Protocol - [Retatrutide Cycle Protocol: Escalation, Duration and Coming Off](https://knowyourpeptide.com/blog/retatrutide-cycle-protocol): Retatrutide escalation schedules from the phase 2 program, why the 8mg arm captured most of the effect of 12mg, a hold o… ## Blog: Pharmacology - [Retatrutide Half-Life and Pharmacokinetics: Why Once Weekly Works](https://knowyourpeptide.com/blog/retatrutide-half-life-pharmacokinetics): The six day half-life explained, plus accumulation math showing why plasma levels keep climbing to week 5. Why a week 2 … ## Blog: Reconstitution - [Retatrutide Reconstitution Guide: Mixing, Concentration Math and Storage](https://knowyourpeptide.com/blog/retatrutide-reconstitution-guide): How to reconstitute lyophilized retatrutide correctly. Vial-by-water concentration tables, insulin syringe conversions f… ## Blog: Regulatory - [FDA Peptide Reclassification 2026: What Researchers Need to Know](https://knowyourpeptide.com/blog/fda-peptide-reclassification-2026-what-researchers-need-to-know): The FDA has been systematically removing research peptides from the compounding market since 2023. Here's where things s…