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Scientific overviews of research peptides for laboratory and educational reference. All content is intended strictly for scientific purposes and does not constitute medical advice.
Our research library covers the mechanisms of action for BPC-157, TB-500, Semaglutide, Tirzepatide, Tesamorelin, CJC-1295, Ipamorelin, GHK-Cu, and more. Each article is written for laboratory reference and includes peer-reviewed citations where available.
Step-by-step reconstitution guides for lyophilized peptides, including bacteriostatic water ratios, storage temperatures, and handling protocols. Designed for qualified researchers working in controlled laboratory settings.
Browse articles by category: Recovery Research, Weight Loss Research, Hormone & Growth Hormone Research, Cognitive Research, Anti-Aging Research, Immune Function Research, and Regulatory Updates covering the latest in peptide science.
How Peptide Purity Is Tested: HPLC, Mass Spec, and COA Explained
Lab Guides
MOTS-c Research Overview: Mitochondrial Peptide and Metabolic Health
Longevity Research
PT-141 (Bremelanotide) Research Overview: Melanocortin and Sexual Function
Peptide Research
Beginner's Guide to Growth Hormone Peptides: GHRH, GHRP, and Secretagogues in Research
Hormone Research
Glow Blend: A Multi-Peptide Research Formulation for Skin Regeneration and Anti-Aging Investigation
Anti-Aging Research
Semaglutide: A GLP-1 Receptor Agonist in Metabolic and Obesity Research
Weight Loss Research
BPC-157 Research Hub
Tissue repair, tendon healing, gut health
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GLP-1 & Weight Loss Hub
Semaglutide, tirzepatide, retatrutide, CagriSema
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Growth Hormone Hub
GHRPs, GHRHs, ipamorelin, CJC-1295, MK-677
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Recovery & Healing Hub
BPC-157, TB-500, GHK-Cu, combination stacks
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Cognitive & Nootropic Hub
Selank, Semax, Dihexa, neuroprotection
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Anti-Aging & Longevity Hub
Epithalon, GHK-Cu, NAD+, MOTS-c, SS-31
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Showing 182 articles
A comprehensive overview of BPC-157, a synthetic pentadecapeptide, focusing on its molecular characteristics, research findings, mechanisms of action, and potential applications in tissue repair and angiogenesis studies.
An exploration of Semaglutide, a GLP-1 receptor agonist, focusing on its molecular characteristics, mechanism of action, and diverse research applications in metabolic and obesity studies within experimental models.
AOD-9604 is a synthetic peptide fragment of human growth hormone (hGH176-191) studied in experimental models for its role in fat metabolism and lipolysis, without the growth-promoting effects associated with full-length hGH.
Ipamorelin is a selective growth hormone secretagogue and ghrelin receptor agonist, currently under investigation in laboratory research for its potential role in growth hormone release and metabolic regulation without the side effects associated with non-selective secretagogues.
Selank is a synthetic heptapeptide analogue of tuftsin studied in experimental models for its anxiolytic and nootropic properties, with research focusing on its modulation of GABA, serotonin, and BDNF signaling pathways.
Tirzepatide is a synthetic dual agonist of the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. Preclinical and clinical research has demonstrated significant reductions in body weight and improvements in glycemic control, positioning it as a subject of intense metabolic research.
Retatrutide is a novel triple agonist targeting GIP, GLP-1, and glucagon receptors simultaneously. Early-phase clinical research has reported unprecedented weight loss magnitudes, positioning it as one of the most potent anti-obesity compounds currently under investigation.
Tesamorelin is a synthetic analogue of growth hormone-releasing hormone (GHRH) stabilized by the addition of a trans-3-hexenoic acid group. Research has focused on its ability to stimulate endogenous growth hormone secretion and reduce visceral adipose tissue, particularly in the context of HIV-associated lipodystrophy.
CJC-1295 is a synthetic GHRH analogue modified with a Drug Affinity Complex (DAC) that enables covalent albumin binding, dramatically extending its half-life to 6-8 days. This extended activity profile makes it a valuable tool for research into sustained growth hormone axis stimulation.
Sermorelin is a synthetic 29-amino acid peptide corresponding to the biologically active N-terminal fragment of endogenous growth hormone-releasing hormone (GHRH). It stimulates pituitary GH secretion through the same receptor as native GHRH and has been studied extensively as a diagnostic tool and research compound for GH axis investigation.
GHRP-6 (Growth Hormone Releasing Peptide-6) is a synthetic hexapeptide that acts as a ghrelin mimetic, stimulating GH secretion through the GHS-R1a receptor. It is one of the original synthetic growth hormone secretagogues and has been widely used in research to investigate the ghrelin axis and its role in GH regulation, appetite, and metabolic function.
GHRP-2 is a synthetic hexapeptide growth hormone secretagogue that activates the GHS-R1a receptor with higher potency than GHRP-6. It produces robust, dose-dependent GH release with comparatively less appetite stimulation, making it a widely used research tool for GH axis investigation.
GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is a naturally occurring human plasma tripeptide with a high affinity for copper ions. Decades of research have implicated it in wound healing, collagen synthesis, anti-inflammatory signaling, and gene expression regulation, making it one of the most studied naturally derived peptides in regenerative medicine research.
NAD+ (nicotinamide adenine dinucleotide) is a fundamental coenzyme present in all living cells, essential for energy metabolism, DNA repair, and sirtuin activation. Research has established that NAD+ levels decline with age, and restoration of NAD+ has been studied as a potential intervention in aging-related metabolic decline.
MOTS-c is a 16-amino acid peptide encoded within the mitochondrial genome, making it one of the few known mitochondrial-derived peptides (MDPs). Research has identified roles in metabolic regulation, insulin sensitivity, exercise response, and aging, positioning MOTS-c as a novel intersection between mitochondrial biology and systemic metabolic control.
The combination of CJC-1295 and ipamorelin represents a dual-pathway approach to GH axis stimulation, pairing a long-acting GHRH analogue with a selective GHRP. Research has demonstrated that this combination produces synergistic GH release substantially greater than either peptide alone, making it a widely studied protocol in growth hormone research.
TB-500 is a synthetic version of the 43-amino acid peptide Thymosin Beta-4 (Tbeta4), one of the most abundant intracellular peptides in mammalian cells. Research has identified roles in actin dynamics, cell migration, wound healing, angiogenesis, and cardiac repair, making TB-500 a subject of significant interest in regenerative medicine research.
The BPC-157/TB-500 combination pairs two of the most studied regenerative peptides in preclinical research. BPC-157 targets angiogenesis and tendon-to-bone healing through growth factor upregulation, while TB-500 promotes cell migration and actin dynamics. Together, they address complementary aspects of the tissue repair cascade.
Melanotan II is a synthetic cyclic analogue of alpha-melanocyte-stimulating hormone (alpha-MSH) that acts as a potent agonist at melanocortin receptors MC1R, MC3R, MC4R, and MC5R. Research has investigated its roles in skin pigmentation, sexual function, appetite regulation, and inflammation.
Semax is a synthetic heptapeptide analogue of the ACTH(4-7) fragment, developed in Russia and studied for neuroprotective, nootropic, and anxiolytic properties. Research has demonstrated effects on BDNF expression, dopaminergic and serotonergic systems, and cognitive function in animal models and clinical studies.
Glow Blend is a research-grade multi-peptide formulation combining GHK-Cu, Epithalon, and complementary peptides studied for their roles in skin regeneration, collagen synthesis, and cellular anti-aging mechanisms. The combination targets multiple pathways in skin biology simultaneously.
A comprehensive laboratory reference covering the principles, solvents, concentration calculations, standard procedures, and stability considerations for reconstituting lyophilized research peptides. Written for qualified researchers working with peptide compounds in laboratory settings.
A comprehensive laboratory reference covering degradation pathways, lyophilized and reconstituted peptide storage conditions, freeze-thaw cycle management, peptide-specific stability profiles, and quality assessment protocols for research-grade peptide preparations.
A comprehensive guide to the analytical methods used to characterize research peptide quality, including HPLC purity analysis, mass spectrometry identity confirmation, and how to evaluate a Certificate of Analysis.
HHS Secretary RFK Jr. announced that approximately 14 of 19 previously restricted peptides could be legally compounded again by US pharmacies within weeks. Here is what this means for the research community.
A detailed review of the dosing parameters used in published BPC-157 animal studies, including effective dose ranges, administration routes, and study duration reported in peer-reviewed literature.
A review of dosing parameters, administration routes, and study designs used in published Thymosin Beta-4 (TB-500) preclinical research, drawn from peer-reviewed literature.
A practical guide to reconstituting lyophilized research peptides using bacteriostatic water, including concentration calculations, sterile technique, and storage recommendations based on established laboratory practice.
A review of the dosing parameters, administration protocols, and study designs used in published CJC-1295 and Ipamorelin preclinical and clinical research.
A side-by-side comparison of BPC-157 and TB-500 (Thymosin Beta-4 fragment) based on published preclinical research, examining their distinct mechanisms of action, tissue targets, and research applications.
A comparison of CJC-1295 and Sermorelin as growth hormone-releasing hormone analogues, examining their structural differences, pharmacokinetics, and published research applications.
A research-based comparison of Ipamorelin and GHRP-6 as growth hormone secretagogue receptor agonists, focusing on their selectivity profiles, side effect differences in animal models, and published research applications.
A comparison of AOD-9604 and Semaglutide as research tools in metabolic studies, examining their distinct mechanisms of action, published evidence, and appropriate research applications.
An introduction to synthetic research peptides -- what they are, how they differ from proteins and drugs, why they are used in laboratory research, and the regulatory framework governing their use.
A practical guide to interpreting the Certificate of Analysis for research peptides, including how to evaluate HPLC purity data, mass spectrometry identity confirmation, and common red flags that indicate poor quality documentation.
A review of the peptides most extensively studied in preclinical tissue recovery and repair models, summarizing the published evidence for each compound's research applications.
An examination of the scientific rationale for combining BPC-157 and TB-500 in tissue repair research, reviewing their complementary mechanisms and the available published evidence on combined administration.
An examination of the scientific rationale for combining a GHRH analogue (CJC-1295) with a GHSR agonist (Ipamorelin) in growth hormone research, based on the known physiology of GH secretion.
A review of GHK-Cu (copper peptide) and NAD+ as research tools in cellular repair and aging models, examining their distinct mechanisms and the published evidence for each compound.
A review of Semax and Selank as synthetic neuropeptides studied in cognitive function and anxiety models, examining their mechanisms, published evidence, and research applications.
A detailed comparison of lyophilized and reconstituted peptide storage conditions, covering degradation mechanisms, temperature requirements, and practical protocols for maintaining research-grade peptide integrity.
A research-focused overview of peptides studied for metabolic effects, including mechanisms of action, published study findings, and key differences between GLP-1 receptor agonists, lipolytic fragments, and mitochondrial regulators.
A detailed research comparison of semaglutide (GLP-1 agonist) and tirzepatide (dual GIP/GLP-1 agonist), covering receptor pharmacology, clinical trial outcomes, and the mechanistic basis for their differing efficacy profiles.
An introductory overview of the growth hormone peptide axis for researchers new to the field, covering the distinction between GHRH analogues, GHRPs, and synthetic secretagogues, with key published findings for each class.
A review of somatostatin's role as the primary inhibitor of GH secretion and how GHRP compounds reduce somatostatin tone to amplify GH pulses.
A review of receptor desensitization and downregulation in the context of peptide research, and how dosing frequency affects the sustained efficacy of research compounds.
A practical guide to identifying red flags in Certificate of Analysis documents from peptide suppliers, including missing data, implausible purity claims, and signs of in-house testing bias.
A comparative overview of the major research peptides studied for weight loss and metabolic research, examining their mechanisms, evidence bases, and relative efficacy.
An examination of BPC-157's documented interactions with enteric nervous system pathways and central nervous system modulation in preclinical studies.
A detailed look at how TB-500's thymosin beta-4 sequence interacts with G-actin to promote cell migration, angiogenesis, and tissue repair in preclinical models.
A review of GHK-Cu's copper-binding chemistry, collagen synthesis stimulation, and antioxidant properties documented in published preclinical and clinical research.
A review of Selank's documented anxiolytic properties, GABA-A receptor modulation, and neurotrophic effects in published preclinical and clinical research.
A review of Semax's documented effects on BDNF expression, neuroprotection, and cognitive function in published preclinical and clinical research.
A review of Epithalon's documented effects on telomere length, telomerase activity, and lifespan in preclinical models, based on the published work of Vladimir Khavinson.
A comparison of NAD+ precursor supplementation (NMN, NR) versus direct NAD+ delivery approaches, examining bioavailability, mechanism differences, and the published evidence base.
A mechanistic overview of how research peptides interact with cell surface receptors, activate second messenger systems, and produce downstream biological effects.
A detailed mechanistic review of how GHRH analogues and GHRPs stimulate GH release through complementary receptor pathways and synergistic mechanisms.
A review of IGF-1 biology, its role as the primary mediator of GH peptide effects, and the published research on IGF-1 signaling in muscle, bone, and metabolic tissue.
A side-by-side comparison of BPC-157 and TB-500 research: mechanisms, tissue targets, published evidence, and the rationale for studying them in combination.
A detailed comparison of Ipamorelin and GHRP-6 as GH secretagogues, examining receptor selectivity, cortisol and prolactin effects, appetite stimulation, and published GH output data.
A review of AOD-9604's origin as a fragment of human growth hormone, its documented lipolytic effects, and the published clinical evidence from Metabolic Pharmaceuticals' trials.
A comparison of Hexarelin and Ipamorelin as GH secretagogues, examining potency differences, cardiac effects unique to Hexarelin, and desensitization profiles.
A scientific review of the chemical degradation pathways that affect peptide stability, and how temperature, pH, light exposure, and reconstitution conditions influence research compound integrity.
A technical explanation of the two primary analytical methods used to verify research peptide purity and identity: HPLC and mass spectrometry, and what to look for in a Certificate of Analysis.
A clear explanation of the regulatory, purity, and manufacturing differences between research-grade and pharmaceutical-grade peptides, and what these distinctions mean in practice.
A mechanistic analysis of the BPC-157, TB-500, and GHK-Cu combination for tissue repair research, examining how the three compounds target complementary biological pathways.
A mechanistic analysis of the CJC-1295, Ipamorelin, and MK-677 combination for GH axis research, examining how the three compounds target complementary aspects of GH secretion.
A mechanistic review of the Epithalon, GHK-Cu, and NAD+ combination for anti-aging research, examining how each compound targets distinct hallmarks of cellular aging.
A mechanistic review of the Semax, Selank, and NAD+ combination for cognitive research, examining how the three compounds target complementary aspects of neurological function.
A factual overview of the FDA regulatory framework governing research peptides, including the distinction between research chemicals and drugs, and the legal landscape for peptide research.
A review of BPC-157's documented effects on nitric oxide production and eNOS activation, and the implications for vascular and tissue repair research.
A comparison of Sermorelin and CJC-1295 as GHRH analogues, examining the pharmacokinetic differences that make CJC-1295 more suitable for sustained GH axis stimulation research.
A comparison of Epithalon and NAD+ as anti-aging research compounds, examining their distinct mechanisms -- telomerase activation vs mitochondrial support -- and the evidence base for each.
A comparison of GHK-Cu and Epidermal Growth Factor (EGF) as skin repair research compounds, examining their distinct mechanisms and the evidence for each in wound healing and skin rejuvenation research.
A comparison of GHRP-2 and GHRP-6 as GH secretagogues, examining their relative GH output, hunger-stimulating effects, and cortisol elevation profiles.
A mechanistic and clinical comparison of Tirzepatide (dual GLP-1/GIP agonist) and Semaglutide (GLP-1 agonist) based on published Phase III trial data.
A comprehensive review of MK-677 (Ibutamoren) as an orally active GHS-R1a agonist, covering its pharmacokinetics, published clinical trial data, and research applications.
A comprehensive review of NAD+ biology, the evidence for age-related NAD+ decline, and the published research on NAD+ precursor supplementation in animal models and human clinical trials.
A review of Selank's pharmacology, including its proposed GABAergic mechanism, BDNF upregulation effects, and the published evidence from Russian clinical trials.
A review of Semax's pharmacology, including its ACTH-derived structure, BDNF upregulation mechanism, and the published evidence for neuroprotective effects in animal models and clinical studies.
A review of the molecular pathways governing collagen synthesis in fibroblasts and how research peptides including GHK-Cu, BPC-157, and TB-500 interact with these pathways.
A review of angiogenesis biology and how research peptides including BPC-157, TB-500, and GHK-Cu promote new blood vessel formation through VEGF and related pathways.
A review of the hypothalamic-pituitary-adrenal (HPA) axis and how research peptides including GHRPs and BPC-157 interact with stress response pathways.
A review of PT-141 (Bremelanotide) as a melanocortin receptor agonist, its FDA approval for hypoactive sexual desire disorder, and the published mechanistic research.
A review of neurotrophin biology (BDNF, NGF, NT-3) and how research peptides including Semax, Selank, and BPC-157 interact with neurotrophin signaling pathways.
An evidence-informed overview of peptide cycling in preclinical research, examining why structured on/off protocols are used, the role of receptor desensitization, and how different peptide classes are typically cycled in experimental models.
A side-by-side comparison of Hexarelin and GHRP-6, two synthetic growth hormone-releasing peptides, examining their structural differences, receptor pharmacology, GH-releasing potency, and distinct research applications in preclinical models.
A detailed comparison of Tesamorelin (a GHRH analogue) and Semaglutide (a GLP-1 receptor agonist) across mechanism of action, metabolic effects, body composition findings, and research applications in experimental models.
An overview of MOTS-c, a 16-amino acid mitochondrial-derived peptide encoded by the 12S rRNA gene, examining its discovery, mechanism of action in metabolic regulation, exercise mimicry research, and implications for aging biology.
A comprehensive research overview of Thymosin Alpha-1, a 28-amino acid thymic peptide with well-characterized immunomodulatory properties, examining its mechanisms of T-cell regulation, dendritic cell activation, and applications in immune research models.
An in-depth look at GHK-Cu (glycyl-L-histidyl-L-lysine copper complex), examining its role in collagen synthesis, wound healing, skin biology, and anti-inflammatory signaling based on published preclinical and clinical research.
An overview of Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide), a potent hepatocyte growth factor (HGF) modulator studied in experimental models for its effects on synaptic connectivity, memory, and neurological repair.
A research overview of SS-31 (elamipretide), a mitochondria-targeted tetrapeptide that selectively concentrates in the inner mitochondrial membrane, examining its cardiolipin-stabilizing mechanism and findings in aging, cardiac, and metabolic research models.
A research overview of KPV (Lys-Pro-Val), a melanocortin-derived tripeptide with potent anti-inflammatory properties, examining its PepT1-mediated intestinal uptake mechanism and research applications in inflammatory bowel disease and gut biology models.
A researcher's guide to the analytical methods used to verify peptide identity, purity, and quality -- covering HPLC, mass spectrometry, amino acid analysis, and what to look for in a Certificate of Analysis (COA) from a peptide supplier.
A practical research guide covering peptide plasma half-life, enzymatic degradation mechanisms, structural modifications that extend stability, and storage conditions that preserve peptide integrity for experimental use.
A foundational research guide explaining how peptides interact with cellular receptors, the distinction between agonists and antagonists, receptor selectivity mechanisms, and how binding affinity (Ki, Kd, EC50) is measured and interpreted in peptide research.
An examination of the research rationale for combining BPC-157 and TB-500 (Thymosin Beta-4) in experimental models, exploring their complementary mechanisms in tissue repair, angiogenesis, and inflammation modulation.
A research-focused review of the CJC-1295 and Ipamorelin combination, examining how simultaneous activation of GHRH receptors and ghrelin receptors produces synergistic growth hormone secretion in experimental models.
An exploration of the research rationale for studying GHK-Cu (copper tripeptide) alongside NAD+ precursors, examining their complementary roles in cellular repair, mitochondrial function, and epigenetic regulation in experimental models.
A research overview examining the complementary mechanisms of Epithalon (Epitalon), a telomerase-activating tetrapeptide, and NAD+ precursors in the context of cellular aging, telomere maintenance, and mitochondrial health research.
A research overview of Semax and Selank, two synthetic neuropeptides developed in Russia, examining their distinct yet complementary mechanisms in BDNF upregulation, anxiolytic activity, and cognitive function research in experimental models.
Research overview of retatrutide (LY3437943), Eli Lilly's GLP-1/GIP/glucagon triple agonist. Covers mechanism of action, TRIUMPH Phase 3 trial data, and metabolic research applications.
Research overview of CagriSema -- Novo Nordisk's cagrilintide + semaglutide combination. Covers the dual amylin/GLP-1 mechanism, REDEFINE Phase 3 trial results, and metabolic research significance.
A researcher's guide to evaluating peptide suppliers. Covers COA verification, HPLC purity standards, third-party testing, cold chain logistics, and red flags to avoid when sourcing research compounds.
Step-by-step guide for reconstituting lyophilized research peptides. Covers bacteriostatic water ratios, concentration calculations, syringe selection, storage conditions, and common errors to avoid.
Overview of the 2026 peptide research landscape. Examines key longevity compounds -- Epithalon, GHK-Cu, NAD+, BPC-157 -- the biohacking-to-mainstream shift, and the science behind peptide-based longevity research.
A practical guide to interpreting peptide COA documents, covering HPLC purity charts, mass spectrometry data, endotoxin limits, and the red flags that indicate a fraudulent or low-quality certificate.
A laboratory guide to storing lyophilized and reconstituted research peptides. Covers temperature requirements, freeze-thaw cycle limits, light and oxidation protection, and the signs of peptide degradation to watch for.
A laboratory reference guide to selecting the correct syringe type, needle gauge, and needle length for handling research peptides. Covers insulin syringes, reconstitution needles, volume accuracy, and common selection errors.
A precise, step-by-step guide to calculating and drawing peptide doses using insulin syringes. Covers unit conversions, BAC water volume math, and how to avoid the most common measurement errors in peptide research.
A technical guide to the three primary analytical methods used to verify peptide purity and identity -- HPLC, mass spectrometry, and NMR -- including what each test measures, how to read the results, and why all three together provide the strongest quality guarantee.
A comprehensive research overview of BPC-157 (Body Protection Compound), covering its mechanisms of action, studied effects on tissue repair, tendon healing, and gut health, with a full review of current preclinical evidence.
A comprehensive research overview of the GLP-1 receptor agonist class, tracing the science from native GLP-1 through semaglutide, tirzepatide, retatrutide, and CagriSema -- covering mechanisms, trial data, and the future of metabolic research.
A detailed research overview of growth hormone-releasing peptides (GHRPs), growth hormone-releasing hormone analogs (GHRHs), and second-generation secretagogues including ipamorelin, CJC-1295, MK-677, and tesamorelin -- covering mechanisms, trial data, and research applications.
An evidence-based review of peptides studied in the context of longevity and anti-aging research, including epitalon, thymosin alpha-1, GHK-Cu, and GLP-1 agonists -- covering the current science, limitations of existing data, and the most promising research directions.
A comprehensive research overview of TB-500 (the synthetic fragment of thymosin beta-4), covering its role in actin regulation, angiogenesis, and tissue repair -- with a full review of preclinical evidence and the current state of clinical research.
Ozempic, Wegovy, and Mounjaro share overlapping mechanisms but differ in approved indications, dosing, and receptor targets — a research-focused comparison of semaglutide vs. tirzepatide formulations.
A detailed mechanistic review of GLP-1 receptor agonism — covering pancreatic beta-cell signaling, hypothalamic appetite suppression, gastric emptying delay, and cardiovascular protection pathways.
Research overview of peptide stacking strategies for fat loss — covering GLP-1 + GIP combinations, GH secretagogue stacks, and the mechanistic rationale for combining AOD-9604 with metabolic peptides.
Comprehensive research review of semaglutide's weight loss mechanisms, covering the STEP trial program, CNS appetite suppression pathways, and the SELECT cardiovascular outcomes data published in 2023.
A research-design perspective on choosing between tirzepatide and semaglutide for metabolic studies — comparing receptor targets, trial outcomes, mechanistic novelty, and practical research considerations.
A buyer-intent guide to evaluating research peptide suppliers in 2026 — covering COA verification, purity standards, third-party testing, shipping practices, and the red flags that indicate low-quality sources.
A buyer's guide to sourcing research-grade BPC-157 — covering purity standards, COA verification, what distinguishes legitimate suppliers from low-quality sources, and why third-party testing matters.
A research-focused guide to sourcing semaglutide for laboratory use — covering purity standards, COA requirements, the difference between research-grade and pharmaceutical formulations, and supplier due diligence.
A comprehensive beginner's guide to research peptides — covering what peptides are, how they work, the most commonly studied compounds, how to read a COA, and how to set up a basic research protocol.
A comprehensive glossary of peptide research terminology — covering synthesis methods, analytical techniques, receptor pharmacology, and regulatory terms that every researcher needs to understand.
Epitalon and Epithalon are the same tetrapeptide (Ala-Glu-Asp-Gly) — a research overview of telomerase activation, telomere elongation, and longevity studies in model organisms.
A research comparison of NAD+ precursors — NMN, NR, and NAD-linked peptides — covering sirtuin activation, DNA repair, mitochondrial biogenesis, and 2025-2026 clinical trial data.
MOTS-c is a mitochondria-derived peptide encoded in the 12S rRNA gene that regulates metabolic homeostasis, insulin sensitivity, and exercise adaptation — a research overview of its mechanisms and aging studies.
SS-31 (Elamipretide) is a cardiolipin-targeting tetrapeptide that stabilizes the inner mitochondrial membrane, reduces ROS production, and has shown efficacy in heart failure and aging models — a full research overview.
GHK-Cu (copper tripeptide-1) is a naturally occurring plasma peptide that declines with age, stimulating collagen synthesis, wound healing, antioxidant defense, and gene expression remodeling — a complete research overview.
A detailed research overview of the Ipamorelin and CJC-1295 combination, examining their complementary mechanisms, synergistic GH pulse amplification, and what the literature says about combined administration protocols.
A comprehensive research overview of sermorelin, a synthetic GHRH analogue used in laboratory studies of growth hormone secretion, pituitary function, and somatopause.
A head-to-head research comparison of hexarelin and GHRP-6, two first-generation growth hormone-releasing peptides, examining potency, selectivity, cardiovascular effects, and research applications.
A comprehensive research overview of MK-677 (ibutamoren), a non-peptide oral ghrelin mimetic that stimulates GH and IGF-1 secretion, with a review of clinical trials and research applications.
A research overview of the TB-500 and BPC-157 combination, examining their complementary mechanisms in tissue repair, angiogenesis, and inflammation modulation.
A practical research guide to peptide storage, stability, and degradation mechanisms, covering lyophilized vs. reconstituted storage, temperature requirements, freeze-thaw cycles, and light sensitivity.
A research overview of AOD-9604, a synthetic fragment of human growth hormone (hGH 176-191) studied for its effects on fat metabolism, lipolysis, and adipogenesis without the growth-promoting effects of full-length GH.
A research overview of PT-141 (bremelanotide), a melanocortin receptor agonist studied for its effects on sexual function, with a review of its mechanism, clinical trials, and FDA approval history.
A technical guide to peptide purity testing methods used in research-grade peptide manufacturing, covering HPLC, mass spectrometry, amino acid analysis, and how to read a Certificate of Analysis (COA).
A research overview of Follistatin-344, a naturally occurring protein that inhibits myostatin and activin signaling, with a review of its role in muscle growth regulation, preclinical research, and research applications.
A comprehensive research overview of Epithalon (Epitalon), a synthetic tetrapeptide studied for its effects on telomere elongation, telomerase activation, and aging biomarkers in preclinical and clinical research.
A research overview of Thymosin Alpha-1 (Tα1), a naturally occurring thymic peptide studied for its immunomodulatory, antiviral, and anti-tumor properties, with a review of clinical trials and FDA-approved applications.
A deep-dive research overview of Selank, a synthetic analogue of the endogenous peptide tuftsin, examining its anxiolytic, nootropic, and immunomodulatory mechanisms, clinical trials, and comparison with benzodiazepines.
A deep-dive research overview of Semax, a synthetic ACTH analogue studied for cognitive enhancement, neuroprotection, BDNF upregulation, and stroke recovery, with a review of Russian clinical trials and mechanisms.
A research overview of GHK-Cu (glycyl-L-histidyl-L-lysine copper), a naturally occurring copper-binding tripeptide studied for its roles in skin repair, collagen synthesis, anti-aging, and gene expression regulation.
A research overview of MOTS-c, a mitochondria-derived peptide encoded in mitochondrial DNA, studied for its roles in metabolic regulation, insulin sensitivity, exercise physiology, and aging.
A comprehensive research overview of NAD+ (nicotinamide adenine dinucleotide), covering its roles in cellular energy metabolism, DNA repair, sirtuin activation, and the research evidence for NAD+ precursors in aging and metabolic disease.
A research overview of retatrutide, a triple agonist targeting GLP-1, GIP, and glucagon receptors simultaneously, with a review of Phase 2 clinical trial results showing up to 24% body weight reduction.
A research overview of tesamorelin, an FDA-approved GHRH analogue studied for visceral adiposity reduction in HIV-associated lipodystrophy, with a review of clinical trials, mechanisms, and research applications.
A research overview of Melanotan II, a non-selective melanocortin receptor agonist studied for its effects on skin pigmentation, sexual function, appetite suppression, and cardiovascular research.
A comprehensive deep-dive into Hexarelin, the most potent growth hormone-releasing peptide (GHRP), examining its receptor pharmacology, GH-releasing potency, cardiac research, and comparison with GHRP-2 and GHRP-6.
A deep-dive research overview of Follistatin-344, a naturally occurring myostatin antagonist studied for its roles in muscle hypertrophy, fertility, and cancer biology, with a review of preclinical and clinical evidence.
A deep-dive research overview of SS-31 (Elamipretide/MTP-131), a mitochondria-targeting tetrapeptide studied for cardioprotection, heart failure, renal disease, and mitochondrial dysfunction across multiple clinical trials.
A research overview of Kisspeptin (Metastin), a neuropeptide that acts as the master regulator of the reproductive axis through GnRH stimulation, with a review of clinical trials in hypogonadism, fertility, and sexual arousal.
A head-to-head research comparison of the three most widely studied GHRH/GHRP peptides — Sermorelin, Ipamorelin, and CJC-1295 — examining mechanism, potency, half-life, GH pulse characteristics, and research applications.
A comprehensive research comparison of the three most studied tissue repair peptides — BPC-157, TB-500, and GHK-Cu — examining their distinct mechanisms, tissue targets, and research applications to guide protocol selection.
A definitive research comparison of the three generations of GLP-1 class weight loss peptides — semaglutide (GLP-1), tirzepatide (GLP-1+GIP), and retatrutide (GLP-1+GIP+glucagon) — covering mechanisms, clinical trial data, and metabolic effects.
A head-to-head research comparison of the three major growth hormone-releasing peptides — GHRP-2, GHRP-6, and Hexarelin — examining receptor pharmacology, GH pulse magnitude, ghrelin effects, and research applications.
A research guide to the most studied peptides for muscle and connective tissue recovery — BPC-157, TB-500, GHK-Cu, and GH-releasing peptides — examining mechanisms, evidence, and research protocol considerations.
A research guide to peptide cycling strategies, examining the scientific rationale for cycling vs. continuous administration, receptor desensitization mechanisms, and evidence-based combination protocols from the research literature.
An in-depth look at Thymosin Alpha-1 (Tα1), its thymic origins, immune-modulating mechanisms, antiviral properties, and clinical research findings.
A comprehensive review of Cerebrolysin's neurotrophic mechanisms, clinical research in stroke, Alzheimer's disease, and traumatic brain injury, and its role in cognitive enhancement research.
A detailed comparison of NAD+ precursors — NMN, NR, and direct NAD+ — covering bioavailability, conversion pathways, research evidence, and practical considerations for longevity research.
A comprehensive guide to how peptides are absorbed, distributed, and metabolized, covering oral vs. subcutaneous vs. intranasal routes and factors affecting bioavailability in research.
A step-by-step guide to interpreting a peptide Certificate of Analysis, covering HPLC purity, mass spectrometry identity confirmation, moisture content, and what to look for in a legitimate COA.
A comprehensive overview of IGF-1 LR3, its extended half-life compared to native IGF-1, mechanisms of action in muscle hypertrophy and tissue repair research, and key research findings.
A research-focused review of peptides studied for joint health, cartilage repair, and musculoskeletal recovery, with a focus on BPC-157, TB-500, and their combination protocols.
A comprehensive comparison of all major growth hormone secretagogues including GHRH analogs, GHRPs, and ghrelin mimetics, covering mechanisms, potency, pulsatility, and research applications.
A review of peptides studied for sleep quality improvement, circadian rhythm regulation, and recovery optimization, including DSIP, Epithalon, Ipamorelin, and Delta sleep-inducing peptide research.
A review of peptides studied for cardiovascular protection, including BPC-157, Thymosin Beta-4, GHK-Cu, and Semax, covering their cardioprotective mechanisms and key research findings.
A research overview of Dihexa (PNB-0408), a potent HGF/MET pathway activator studied for its neurogenic and cognitive enhancement effects, including comparisons with BDNF and other nootropic peptides.
A research overview of Pinealon (EDR), a tripeptide developed by the St. Petersburg Institute of Bioregulation, covering its epigenetic mechanisms, neuroprotective effects, and role in pineal gland research.
A research overview of Cortagen (KED), a tripeptide bioregulator derived from cardiac tissue, covering its cardioprotective mechanisms, vascular effects, and role in cardiovascular aging research.
A comprehensive deep dive into Delta Sleep-Inducing Peptide (DSIP), covering its discovery, mechanisms of action, sleep architecture effects, stress normalization research, and comparison with other sleep-modulating peptides.
A research-focused guide to peptides studied in female-specific contexts, including hormonal regulation, menopause research, bone density, skin aging, and recovery — an underserved area with growing research interest.
A head-to-head research comparison of Selank and Semax — two Russian-developed nootropic peptides with overlapping but distinct mechanisms, covering anxiety, cognition, BDNF, and clinical research findings.
A review of peptides studied for gut health, intestinal barrier repair, and microbiome modulation, with a focus on BPC-157, GLP-1 analogs, and the gut-brain axis in research contexts.
A comprehensive review of peptides studied for skin aging, collagen synthesis, and dermal repair, with a focus on GHK-Cu, matrikines, and the molecular mechanisms of skin aging research.
A comprehensive review of peptides studied for immune system modulation, including Thymosin Alpha-1, Thymosin Beta-4, Vilon, and Selank, covering T-cell regulation, NK cell activation, and immunosenescence research.
A practical guide to research peptide dosing protocols, covering reconstitution, injection technique, dosing frequency, cycling, and protocol design considerations for the most commonly studied peptides.