The reference for research peptides.
Mechanisms, research-reported dosing, reconstitution tools, and sourcing guidance for 66 peptides — compiled from the literature, not marketing copy.
Explore by research area
Start from a goal — each hub collects the peptides, guides, dosing charts, and tools for it.
Weight loss & metabolism
Compare GLP-1s, appetite pathways, and metabolic peptides with practical research references for every compound.
Muscle & performance
Growth-hormone secretagogues, strength, recovery, and body-composition research.
Repair & recovery
Connective-tissue, injury recovery, inflammation, and regeneration research.
Longevity & anti-aging
Healthy-aging, mitochondrial function, cellular resilience, and cognition research.
Skin, hair & aesthetics
Copper and cosmetic peptides studied for skin remodeling, collagen, and pigmentation.
Focus & cognition
Regulatory and neurotrophic peptides studied for cognition, stress, and sleep.
Featured peptides
BPC-157
Synthetic pentadecapeptide
A stable synthetic peptide based on a partial sequence identified in gastric juice. It is one of the most-studied research peptides for connective-tissue and gut-lining repair in animal models.
TB-500
Synthetic actin-binding peptide fragment
A synthetic fragment related to Thymosin Beta-4, a naturally occurring actin-regulating peptide. Studied in preclinical models for cell migration, wound healing, and flexibility.
GHK-Cu
Copper-binding tripeptide (Gly-His-Lys)
A naturally occurring copper-binding tripeptide whose plasma level declines with age. Extensively studied in skin biology for remodeling, and in topical cosmetic formulations.
Semaglutide
GLP-1 receptor agonist
A long-acting GLP-1 receptor agonist, FDA-approved for type-2 diabetes and chronic weight management under brand names Ozempic, Wegovy, and Rybelsus. One of the most-studied incretin peptides.
Tirzepatide
Dual GIP / GLP-1 receptor agonist
A dual GIP and GLP-1 receptor agonist, FDA-approved as Mounjaro (type-2 diabetes) and Zepbound (weight management). Trials reported notably large reductions in body weight.
Retatrutide
Triple GIP / GLP-1 / glucagon receptor agonist
An investigational 'triple agonist' targeting the GIP, GLP-1, and glucagon receptors. Phase-2 trials reported among the largest weight reductions seen for an incretin agent. Not approved.
Reconstitution calculator
Turn any vial size, water volume, and target amount into an exact syringe-unit reading — with a live visual. No sign-up.
Start with the fundamentals
Long-form, evidence-based overviews that separate what the research supports from what it doesn't.
Healing & RecoveryBPC-157: What the Research Actually Shows
A research-focused overview of BPC-157, the synthetic pentadecapeptide studied in preclinical models for angiogenesis and tissue repair — its origin, proposed mechanisms, evidence by tissue, limitations, reconstitution, and regulatory status.
Read guide →Healing & RecoveryTB-500 and Thymosin Beta-4: A Research Overview
A research overview of TB-500 and its parent molecule thymosin beta-4: actin regulation and cell migration, angiogenesis and inflammation modulation, preclinical evidence by tissue, reconstitution, dosing conventions, and anti-doping status.
Read guide →Cosmetic & SkinGHK-Cu: The Copper Peptide, From Skin Science to Research Use
A research-focused deep dive into GHK-Cu, the naturally occurring copper-binding tripeptide studied for skin, collagen, gene expression, and tissue remodeling — covering discovery, mechanism, evidence by route, reconstitution math, and safety framing.
Read guide →GLP-1 & MetabolicGLP-1 Receptor Agonists: Semaglutide, Tirzepatide, and Retatrutide Explained
An educational overview of the GLP-1 receptor agonist class — how incretin biology works and how semaglutide, tirzepatide, and retatrutide compare on receptor targets, approval status, trial-reported weight loss, titration, and safety.
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FundamentalsHow to Reconstitute Peptides & How Much Bacteriostatic Water to Use
How to reconstitute peptides step by step: how much bacteriostatic water to use, the concentration math, mixing technique, reading insulin-syringe units, and storage. Research use.
Read guide →Growth HormoneCJC-1295 & Ipamorelin: The GH Secretagogue Stack
Why CJC-1295 and ipamorelin are studied together: complementary growth-hormone-secretagogue mechanisms, DAC versus no-DAC, timing rationale in research, and safety context.
Read guide →GLP-1 & MetabolicSemaglutide vs. Tirzepatide vs. Retatrutide: Choosing an Incretin
How single, dual, and triple incretin agonists compare — semaglutide, tirzepatide, and retatrutide — on mechanism, trial-reported efficacy, approval status, and the research-versus-prescription reality.
Read guide →Sexual HealthPT-141 (Bremelanotide): The Research on Melanocortin Arousal
The research behind PT-141 (bremelanotide): central melanocortin arousal versus PDE5 blood-flow mechanisms, the Vyleesi approval, how it is studied, common effects, and safety context.
Read guide →LongevityMitochondrial Peptides: MOTS-c, SS-31 & Humanin in Longevity Research
An overview of mitochondrial and mitochondria-targeted peptides — MOTS-c, SS-31, and humanin — their studied roles in AMPK signaling and energy metabolism, and why the longevity field is early.
Read guide →Healing & RecoveryBPC-157 & TB-500: The Recovery Stack
Why researchers pair BPC-157 with TB-500, the complementary mechanisms behind the so-called Wolverine stack, research-reported amounts and cycling, how a blend is reconstituted, and the safety and regulatory realities.
Read guide →Growth HormoneGrowth Hormone Peptides Explained: GHRH vs GHRP vs MK-677
A clear breakdown of the three ways research compounds nudge growth-hormone output: GHRH analogs like sermorelin and tesamorelin, ghrelin-receptor GHRPs like ipamorelin, and the oral non-peptide MK-677 — plus how they synergize and where they stand legally.
Read guide →FundamentalsPeptide Safety: Side Effects, Sterility, and Research Risks
An educational overview of how research peptides are discussed in terms of safety: common categories of reported effects, sterility and injection-site practices, why sourcing and certificates of analysis matter, and the research-use-only frame.
Read guide →Cosmetic & SkinMelanotan I vs Melanotan II: Tanning Peptides in Research
How the melanocortin pathway drives tanning, the difference between MC1R-selective afamelanotide (Melanotan I, approved as Scenesse) and the broader-acting Melanotan II, the arousal effect that led to PT-141, and the documented safety and regulatory picture.
Read guide →GLP-1 & MetabolicGLP-1 Side Effects and Why Titration Matters
Why GLP-1 receptor agonists cause the GI effects they do, how slow dose titration reduces them, the less-common concerns raised in clinical trials, and the difference between approved prescription products and research-grade material.
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