Peptide Library

A synthetic peptide fragment derived from a protein found in gastric juice, studied for its broad tissue-healing and cytoprotective effects. Popular in research for tendon, ligament, muscle, and gut repair.

A synthetic version of the active region of Thymosin Beta-4, a naturally occurring peptide that regulates cell migration and tissue repair. Researched for recovery, flexibility, and wound healing.

A long-acting growth hormone releasing hormone (GHRH) analog that stimulates the pituitary to produce more growth hormone. Often paired with a ghrelin mimetic for synergistic GH release.

A selective ghrelin receptor agonist (growth hormone secretagogue) prized for stimulating GH release with minimal effect on cortisol or prolactin. Considered one of the gentler GH peptides.

A growth hormone releasing peptide that strongly stimulates GH secretion via the ghrelin receptor. More potent than GHRP-6 with somewhat less appetite stimulation.

An early growth hormone releasing peptide best known for strong GH stimulation alongside a pronounced increase in appetite via ghrelin signaling.

A GHRH analog comprising the first 29 amino acids of growth hormone releasing hormone, historically used to assess and stimulate pituitary GH output. A gentler, physiologic GH peptide.

An orally active, non-peptide ghrelin receptor agonist that raises GH and IGF-1 levels. Notable for being a daily oral compound rather than an injectable.

A stabilized GHRH analog FDA-approved to reduce excess visceral abdominal fat in HIV-associated lipodystrophy. Studied for its strong effect on visceral adipose tissue.

A potent growth hormone releasing peptide and ghrelin receptor agonist, among the strongest GH-stimulating GHRPs, with additional cardioprotective effects studied in preclinical work.

A modified fragment of the C-terminus of human growth hormone (residues 176-191) studied for fat-loss effects without the broader growth-promoting actions of full GH.

A naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) widely researched for skin regeneration, collagen synthesis, and wound healing. Common in topical cosmetics.

A melanocortin receptor agonist FDA-approved (as Vyleesi) for hypoactive sexual desire disorder in premenopausal women. Acts centrally on the brain rather than the vascular system.

A synthetic melanocortin agonist that stimulates melanin production for tanning, with notable secondary effects on libido and appetite. Non-selective across melanocortin receptors.

A selective MC1R-favoring melanocortin agonist approved (as Scenesse/afamelanotide) to reduce phototoxicity in erythropoietic protoporphyria. More selective for pigmentation than Melanotan II.

A synthetic peptide derived from ACTH(4-10) developed in Russia and used there for cognitive enhancement, stroke recovery, and neuroprotection. Often used intranasally.

A synthetic analog of the immunomodulatory peptide tuftsin developed in Russia for anxiety reduction and cognitive support without the sedation or dependence of benzodiazepines.

A small-molecule angiotensin IV analog studied for potent procognitive and synaptogenic effects, reported in preclinical work to be orders of magnitude more potent than BDNF at forming synapses.

A synthetic tetrapeptide (Ala-Glu-Asp-Gly) based on the pineal peptide epithalamin, studied for telomerase activation, circadian regulation, and longevity in animal and limited human research.

A thymus-derived peptide preparation studied in Russian research for immune restoration and age-related immune support, often paired with Epitalon in longevity protocols.

A thymus-derived immunomodulating peptide approved in many countries (as Zadaxin) for hepatitis and as an immune adjuvant. Studied for restoring and balancing immune function.

The only human cathelicidin antimicrobial peptide, central to innate immunity. Studied for antimicrobial, immunomodulatory, and wound-healing properties.

A long-acting GLP-1 receptor agonist FDA-approved for type 2 diabetes (Ozempic) and chronic weight management (Wegovy). Among the most effective approved weight-loss therapies.

A dual GIP and GLP-1 receptor agonist FDA-approved for type 2 diabetes (Mounjaro) and weight management (Zepbound), with weight-loss results that often exceed GLP-1-only agents.

A signaling peptide that sits at the top of the reproductive hormone axis, stimulating GnRH release. Studied for fertility, libido, and hormonal regulation.

A spadin-derived peptide studied as a fast-acting antidepressant candidate that works by blocking the TREK-1 potassium channel, with reported neurogenic and neuroprotective effects.

A peptide preparation derived from porcine brain tissue with neurotrophic and neuroprotective properties, used clinically in several countries for stroke, dementia, and traumatic brain injury.

A combination of BPC-157 and TB-500 frequently used together in recovery research to pair localized angiogenic healing with systemic cell-migration and tissue-remodeling effects.

The most popular GH-peptide combination, pairing a GHRH analog (CJC-1295) with a selective ghrelin agonist (ipamorelin) to produce a strong, clean, synergistic growth hormone pulse.

A combination pairing the fat-loss GH fragment AOD-9604 with the GHRH analog CJC-1295, studied to layer direct lipolytic activity onto elevated endogenous growth hormone.

5-Amino-1MQ is a small-molecule inhibitor of the enzyme NNMT, studied in animal models for its potential to reduce fat storage and support metabolic health.

Argireline is a topical cosmetic peptide marketed as a needle-free alternative to neuromodulators, used to soften the appearance of expression lines.

Adipotide is an experimental peptidomimetic studied in animals for targeted destruction of the blood supply feeding white fat tissue.

AHK is a copper-affinity tripeptide (Ala-His-Lys) studied as a cosmetic signaling peptide for hair and skin support.

AHK-Cu is the copper-bound form of the Ala-His-Lys tripeptide, used cosmetically to support hair follicles and dermal renewal.

AICAR (Acadesine) is an AMPK-activating compound studied as an exercise-mimetic for endurance and metabolic effects in animals. Note: AICAR is a small-molecule nucleoside (an AMPK activator), not a peptide, but is commonly sold alongside research peptides.

ARA-290 (Cibinetide) is an 11-amino-acid peptide derived from erythropoietin, studied for nerve repair and reducing neuropathic pain without affecting red blood cells.

B7-33 is a single-chain peptide analog of the hormone relaxin-2, engineered to retain its anti-fibrotic and vasodilatory actions while resisting rapid breakdown. It is studied chiefly for reducing scar tissue (fibrosis) in heart, lung, and kidney models.

Bronchogen is a short synthetic peptide (Ala-Glu-Asp-Leu) studied as a bronchial bioregulator intended to support respiratory tissue function. It is part of the Russian-developed family of short "Khavinson" peptide bioregulators.

Cagrilintide is a long-acting amylin analog developed for weight management, often paired with semaglutide. It slows gastric emptying and increases satiety to reduce food intake.

Cardiogen is a short synthetic peptide (Ala-Glu-Asp-Arg) studied as a cardiovascular bioregulator intended to support heart and vascular tissue. It belongs to the Khavinson family of short peptide bioregulators.

Cartalax is a short synthetic peptide (Ala-Glu-Asp-Gly) studied as a bioregulator for cartilage and connective tissue. It is part of the Khavinson short peptide bioregulator family.

Chonluten is a short synthetic peptide (Glu-Asp-Gly) studied as a bronchial and lung bioregulator. It belongs to the Khavinson family of short peptide bioregulators and is sometimes designated T-34.

Cortagen is a short synthetic peptide (Ala-Glu-Asp-Pro) studied as a bioregulator for the brain and nervous tissue. It is part of the Khavinson family of short peptide bioregulators.

A synthetic ten-amino-acid cosmetic peptide studied as a topical tyrosinase inhibitor to reduce hyperpigmentation and even skin tone.

Delta Sleep-Inducing Peptide is a small neuromodulatory nonapeptide studied for its effects on sleep architecture, stress hormones, and pain modulation.

A modified, more stable form of the tetrapeptide Epitalon studied for telomerase activation and pineal-mediated circadian and longevity effects.

FGL is a synthetic peptide derived from the neural cell adhesion molecule (NCAM) studied as a cognitive enhancer and neuroprotective agent.

Follistatin 315 is the circulating isoform of follistatin, a myostatin-binding protein studied for promoting muscle growth by removing the brake on muscle development.

Follistatin 344 is the full-length precursor isoform of follistatin studied for blocking myostatin and activin to drive muscle growth and tissue repair.

FOXO4-DRI is a synthetic senolytic peptide studied for selectively clearing senescent cells to counter age-related tissue decline.

GHK is a naturally occurring human tripeptide (glycyl-L-histidyl-L-lysine) studied for skin remodeling, wound healing, and tissue regeneration. The copper-free 'basic' form is the parent peptide that readily binds copper in tissue.

GHRH (1-29) is the biologically active N-terminal fragment of human growth hormone-releasing hormone, used in research to stimulate the pituitary to release growth hormone. The synthetic analog of this fragment is also known as sermorelin.

Gonadorelin is a synthetic form of gonadotropin-releasing hormone (GnRH) studied for stimulating the pituitary release of LH and FSH. It is used in fertility research and to assess or support the hypothalamic-pituitary-gonadal axis.

HGH Fragment 176-191 is the C-terminal fragment of human growth hormone studied primarily for its fat-reducing effects without the broader growth-promoting actions of full-length GH. It is a popular research compound for lipolysis.

Humanin is a mitochondrial-derived peptide studied for its cytoprotective, neuroprotective, and metabolic effects. The HNG (Humanin-G) analog is a more potent variant frequently used in research.

IGF-1 DES is a truncated variant of insulin-like growth factor 1 missing the first three N-terminal amino acids, studied for potent, localized anabolic and tissue-growth effects. It is noted for higher activity at the site of injection.

IGF-1 LR3 (Long R3 IGF-1) is an engineered, long-acting analog of insulin-like growth factor 1 studied for sustained anabolic and tissue-growth signaling. Its modifications give it a far longer half-life than native IGF-1.

IGF-1 is a 70-amino-acid peptide hormone that mediates most of the anabolic and growth-promoting effects of growth hormone. It is studied for muscle growth, tissue repair, and metabolic signaling.

KPV is a tripeptide derived from the C-terminus of alpha-MSH that exerts anti-inflammatory effects without pigmentary activity. It is studied for gut inflammation, wound healing, and skin conditions.

The body's principal intracellular antioxidant, a tripeptide with genuine human trial data behind oral and topical use -- and a 2025 systematic review concluding that the injectable route sold for skin lightening is contraindicated for lack of efficacy and side effects.

Livagen is a short synthetic peptide (Lys-Glu-Asp-Ala) developed in Russian peptide bioregulator research, studied for liver function and chromatin activation. It is positioned within the longevity and anti-aging space.

Matrixyl is a palmitoylated pentapeptide (Pal-KTTKS) used topically to stimulate collagen and extracellular matrix synthesis. It is a widely studied cosmetic anti-wrinkle peptide.

Melanostatin DM is a topical nonapeptide marketed as a skin-brightening agent that reduces melanin production. It is studied for evening skin tone and lightening hyperpigmentation.

Nonapeptide-1 is a nine-amino-acid cosmetic peptide that inhibits melanin formation by antagonizing the melanocortin-1 receptor. It is used topically for skin brightening and pigment control.

Pancragen is a synthetic short peptide bioregulator (Lys-Glu-Asp-Trp) studied in Russian research for supporting pancreatic function and glucose metabolism. It belongs to the Khavinson family of peptide bioregulators developed to normalize tissue-specific gene expression in aging organs.

Pentapeptide-18 (Leuphasyl) is a cosmetic peptide used in topical anti-wrinkle formulations to reduce the appearance of expression lines. It mimics enkephalin signaling to dampen excess muscle contraction at the skin surface.

Pinealon is a synthetic tripeptide (Glu-Asp-Arg) studied in Russian research as a brain-targeted peptide bioregulator with proposed neuroprotective and cognition-supporting effects. It is part of the Khavinson short-peptide bioregulator family.

PNC-27 is an experimental anticancer peptide designed to selectively destroy cancer cells by disrupting their membranes while sparing normal cells. It is strictly a laboratory research compound with no approved human use.

PNC-28 is an experimental p53-derived anticancer peptide closely related to PNC-27, studied for selective membrane disruption of tumor cells. It is a laboratory research compound only, with no approved clinical use.

Prostamax is a synthetic peptide bioregulator studied in Russian research for supporting prostate tissue function and urinary health in aging males. It belongs to the short-peptide bioregulator family popularized by Khavinson.

N-Acetyl PT-141 is an N-terminally acetylated analog of the melanocortin peptide PT-141 (bremelanotide) studied for effects on sexual arousal and libido. The acetylation is intended to improve stability while retaining melanocortin receptor activity.

GLP-3 R is an investigational triple agonist that simultaneously activates the GLP-1, GIP, and glucagon receptors, studied for substantial weight loss and improved glycemic control. It is one of the most potent incretin-based agents in late-stage clinical development.

Rigin is a palmitoylated tetrapeptide (Palmitoyl Tetrapeptide-7) used in topical cosmetic formulations to reduce signs of skin aging by modulating inflammatory signaling. It is valued for calming reactive, aging skin and supporting a more even tone.

SLU-PP-332 is a synthetic small-molecule pan-agonist of the estrogen-related receptors (ERRs) studied as an exercise mimetic that increases fat oxidation and endurance in animal models. It is a research chemical, not a peptide.

SNAP-8 (Acetyl Octapeptide-3) is a topical cosmetic peptide marketed as a needle-free alternative for softening expression lines by reducing muscle contraction at the surface. It is an elongated analog of the Argireline hexapeptide.

SS-31 (elamipretide) is a mitochondria-targeted tetrapeptide studied for protecting mitochondrial function in conditions involving oxidative stress and energy failure. It has been investigated clinically for mitochondrial myopathy and heart and kidney disease.

Methylene Blue is a synthetic phenothiazine dye studied as a mitochondrial enhancer and nootropic, acting as an alternative electron carrier in the respiratory chain. Note: Methylene blue is a small-molecule redox dye, not a peptide, though suppliers often stock it alongside peptides.

ABP-7 is a research peptide marketed as an analog within the alpha-MSH / melanocortin family, studied for its potential anti-inflammatory and tissue-protective signaling.

ACE-031 is a soluble decoy receptor (ActRIIB-Fc fusion) studied as a myostatin inhibitor to increase muscle mass and strength.

ACE-083 is a locally acting follistatin-based fusion protein designed to increase muscle size and strength in the specific muscle into which it is injected.

Lipopeptide (Palmitoyl Hexapeptide-12, sold as Biopeptide EL) is a cosmetic signal peptide used topically to support collagen production and improve skin firmness and texture.

PTD-DBM is a cell-permeable peptide studied in hair-loss research for its ability to activate Wnt/beta-catenin signaling and promote hair follicle neogenesis.

9-Me-BC (9-methyl-beta-carboline) is a small-molecule beta-carboline studied as a nootropic for its dopaminergic, neuroprotective, and neurogenesis-promoting effects in animal models.

Adalank is a short synthetic regulatory peptide in the Selank/Tuftsin-related family, studied for anxiolytic and cognition-supporting properties.

Adamax is a proprietary nootropic peptide product marketed for cognitive enhancement and neuroprotection. It is sold as a research chemical with limited public pharmacological data.

Actogenix is a proprietary peptide-bioregulator-style product marketed for vitality, energy, and healthy-aging support. It is sold as a research chemical with limited published data.

Bromantane is an adamantane-derived actoprotector with mild stimulant and anxiolytic properties, used clinically in Russia (as Ladasten) for asthenia and fatigue. It is a small-molecule research chemical, not a peptide, in most other markets. Note: Bromantane is a small-molecule actoprotector, not a peptide, though it is often catalogued with research peptides.

CardioCytogen is a proprietary short-peptide bioregulator marketed for cardiovascular and heart-tissue support. It is sold as a research chemical with limited published characterization.

Cortexin is a polypeptide complex extracted from cerebral cortex tissue, used clinically in Russia and several other countries as a neuroprotective and nootropic agent. In Western markets it is sold as a research chemical. (Cortexin is a registered polypeptide drug in some countries; presented here for educational/research reference only, not as medical guidance.)

Syn-AKE is a topical synthetic dipeptide inspired by snake venom, used in cosmetics to relax facial muscles and soften expression lines.

Syn-Coll is a topical lipidated tripeptide designed to stimulate collagen synthesis and improve skin firmness and wrinkle appearance.

Human menopausal gonadotropin (menotropin) is a purified preparation of the pituitary gonadotropins FSH and LH, historically extracted from the urine of postmenopausal women. It is used clinically to stimulate gametogenesis and gonadal steroid production in fertility settings.

Trevogrumab (REGN1033) is an investigational fully human monoclonal antibody that binds and neutralizes myostatin (GDF-8). It has been studied as an anti-myostatin therapy aimed at preserving or increasing skeletal muscle mass. Note: Trevogrumab is a monoclonal antibody (anti-myostatin), not a peptide; included here for reference.

Myostatin (GDF-8) is a naturally occurring protein that limits skeletal muscle growth. In the research and peptide market the term commonly refers to myostatin-inhibitor compounds intended to block this growth-limiting signal. Note: Myostatin (GDF-8) is a protein that LIMITS muscle growth; research interest centers on inhibiting it, not administering it.

Mazdutide (IBI362) is an investigational dual agonist of the GLP-1 and glucagon receptors based on the oxyntomodulin scaffold. It is being studied for weight loss and glycemic control.

Survodutide (BI 456906) is an investigational dual agonist of the glucagon and GLP-1 receptors developed for obesity and metabolic dysfunction-associated steatohepatitis (MASH). It is administered as a once-weekly subcutaneous injection.

Alpha-melanocyte-stimulating hormone (alpha-MSH) is an endogenous tridecapeptide derived from proopiomelanocortin that regulates skin pigmentation. It is the natural peptide behind melanocortin-driven tanning and also influences appetite and inflammation.

Tyr-hGH 177-191 is a tyrosine-extended analog of the C-terminal lipolytic fragment of human growth hormone. The added tyrosine residue is used mainly to enable labeling and tracing while the fragment retains the fat-mobilizing activity associated with the 176-191 region.

DNSP-11 is an 11-amino-acid peptide derived from the proGDNF (glial cell line-derived neurotrophic factor) precursor that is being studied for its neuroprotective and neurorestorative effects on dopaminergic neurons.

Dermorphin is a naturally occurring opioid heptapeptide originally isolated from the skin of South American Phyllomedusa frogs that acts as an extremely potent and selective mu-opioid receptor agonist.

Retinalamin is a polypeptide and nucleoprotein complex extracted from the retina of cattle, used in some regions as a retinoprotective agent for degenerative and dystrophic eye conditions.

Colivelin is a synthetic hybrid neuroprotective peptide that fuses activity-dependent neurotrophic factor (ADNF) with a potent Humanin derivative, studied for protecting neurons against amyloid-beta and other neurotoxic insults.

Crystagen is a short synthetic immunomodulatory peptide bioregulator (Glu-Trp-Ala-Glu) developed in the Khavinson family of peptides and studied for normalizing immune function.

Thyroidget is a short synthetic peptide bioregulator in the Khavinson family designed to target thyroid tissue and support normalization of thyroid-gland function.

Alarelin acetate is a synthetic gonadotropin-releasing hormone (GnRH) agonist analog used in research and veterinary/reproductive contexts to modulate the hypothalamic-pituitary-gonadal axis.

GLOW is a combination research blend of BPC-157, TB-500 (Thymosin Beta-4), and GHK-Cu studied for tissue repair, recovery, and skin and connective-tissue health. Each component is an unapproved research peptide.

GLOW 2 is a second-generation recovery and skin research blend built around BPC-157, TB-500, and GHK-Cu, typically at adjusted ratios or concentrations. The components are unapproved research peptides.

KLOW extends the GLOW concept by adding the anti-inflammatory tripeptide KPV to BPC-157, TB-500, and GHK-Cu. It is studied for recovery, gut and tissue healing, and skin quality, and its components are unapproved research peptides.

This blend pairs CJC-1295 without DAC (Mod GRF 1-29), a GHRH analog, with GHRP-2, a growth hormone secretagogue, to synergistically stimulate pulsatile growth hormone release. Both are unapproved research peptides.

This blend combines CJC-1295 without DAC (Mod GRF 1-29), a GHRH analog, with GHRP-6, a ghrelin-mimetic secretagogue noted for strong appetite stimulation, to synergistically boost growth hormone release. Both are unapproved research peptides.

This blend combines CJC-1295 without DAC (Mod GRF 1-29), a GHRH analog, with Hexarelin, one of the most potent ghrelin-mimetic secretagogues, to drive a strong synergistic growth hormone pulse. Both are unapproved research peptides.

This three-peptide blend pairs CJC-1295 without DAC (a GHRH analog) with two ghrelin-mimetic secretagogues, Ipamorelin and GHRP-2, to maximize a clean, synergistic growth hormone pulse. All components are unapproved research peptides.

A multi-component research blend combining the cytoprotective peptide BPC-157 with the anti-inflammatory tripeptide KPV plus fatty-acid mediators aimed at gastrointestinal mucosal repair. It is studied for its combined effects on gut-barrier integrity and local inflammation.

A research blend pairing a stabilized arginate salt of BPC-157 with an active fragment of Thymosin Beta-4 to target soft-tissue and musculoskeletal repair. It is studied for accelerated wound healing and recovery.

A research blend of two mitochondrial-derived peptides, MOTS-c and Humanin, studied together for metabolic health, cytoprotection, and longevity. Both are encoded within mitochondrial DNA and act as signaling molecules.

A research blend of two stabilized Russian-developed neuropeptides: N-Acetyl Semax (a nootropic ACTH fragment) and N-Acetyl Selank (an anxiolytic tuftsin analog). The combination is studied for cognition, focus, and stress modulation.

A research blend pairing the cytoprotective peptide BPC-157 with the actin-binding fragment 17-23 of Thymosin Beta-4 (TB-500). It is studied for soft-tissue repair, angiogenesis, and recovery.

A growth-hormone-secretagogue blend combining Modified GRF 1-29 (a CJC-1295 without DAC GHRH analog) with GHRP-6 to stimulate pulsatile growth hormone release. It is studied for recovery, body composition, and appetite.

A research blend combining the long-acting growth factor IGF-1 LR3 with the cytoprotective peptide BPC-157 to support anabolic growth and tissue repair. It is studied for muscle growth, recovery, and injury healing.

MGF is a splice variant of IGF-1 produced locally in muscle in response to mechanical loading or damage. It is studied for its role in activating muscle stem cells and supporting tissue repair.

PEG-MGF is a pegylated form of Mechano Growth Factor engineered for greater stability and a longer systemic half-life than native MGF. It is studied for muscle stem cell activation and recovery.

MOTS-c is a mitochondrial-derived peptide encoded within the 12S rRNA region that acts as a regulator of metabolism. It is studied for improving insulin sensitivity, metabolic flexibility, and exercise capacity.

N-Acetyl Selank Amidate is a stabilized analog of the anxiolytic peptide Selank, modified for improved durability and intranasal delivery. It is studied for anxiety reduction and cognitive support.

N-Acetyl Semax Amidate is a stabilized analog of the ACTH(4-10)-derived nootropic peptide Semax, modified for durability and intranasal use. It is studied for cognition, focus, and neuroprotection.

NAD+ is an essential coenzyme central to cellular energy production and DNA repair whose levels decline with age. It is studied and supplemented for longevity, mitochondrial function, and metabolic health. Note: NAD+ is a coenzyme, not a peptide, commonly sold alongside longevity research compounds.

NMN is a direct biosynthetic precursor of NAD+ used to raise cellular NAD+ levels. It is studied for longevity, metabolic health, and mitochondrial function. Note: NMN is a small-molecule NAD+ precursor, not a peptide, but is catalogued with longevity research compounds.

Orforglipron is an oral, non-peptide small-molecule GLP-1 receptor agonist in late-stage clinical development for obesity and type 2 diabetes. It is studied for weight loss and glycemic control without injections.

OS-01 is a senotherapeutic peptide developed for topical skin application that targets cellular senescence to improve skin aging markers. It is studied for reducing senescent-cell burden and supporting youthful skin function.

Ovagen is a short synthetic bioregulator peptide studied for supporting liver function and protein synthesis. It belongs to the Khavinson family of tissue-specific peptide bioregulators.

Oxytocin is a nine-amino-acid hypothalamic neuropeptide hormone involved in social bonding, reproduction, and uterine contraction. It is FDA-approved clinically for labor induction and is studied for its effects on trust, intimacy, and social behavior.

P21 (P021) is a small peptidergic compound derived from the active region of ciliary neurotrophic factor, studied for promoting neurogenesis and synaptic plasticity. It is researched preclinically as a neuroprotective and cognition-enhancing agent.

Pal-AHK (Palmitoyl Tripeptide-3) is a lipidated cosmetic peptide combining the alanine-histidine-lysine sequence with a palmitic acid tail for improved skin penetration. It is used topically in anti-aging and skin-firming formulations.

Pal-GHK (Palmitoyl Tripeptide-1) is a lipidated derivative of the well-known GHK matrikine, engineered with a palmitic acid tail to enhance skin penetration. It is widely used in topical anti-aging and collagen-boosting cosmetics.

Palmitoyl Dipeptide-6 is a lipidated cosmetic dipeptide used in topical anti-aging formulations. It is marketed for supporting skin firmness and a smoother, more youthful appearance.

TB-500 Fragment 17-23 is a short peptide corresponding to the actin-binding region of thymosin beta-4, studied for tissue repair and regeneration. It represents the core bioactive sequence often credited with TB-500's healing effects.

TB-500 Fragment 1-4 is the N-terminal tetrapeptide (Ac-SDKP) of thymosin beta-4, studied for anti-fibrotic and tissue-protective effects. This fragment is distinct from the actin-binding region and is associated with regulation of fibrosis and inflammation.

Tesofensine is a triple monoamine reuptake inhibitor originally developed for neurodegenerative disease and later investigated as an anti-obesity drug. It produces appetite suppression and notable weight loss in clinical trials. Note: Tesofensine is a small-molecule triple monoamine reuptake inhibitor, not a peptide, but is sold alongside metabolic research compounds.

Testagen is a short synthetic bioregulator peptide from the Khavinson family, studied for effects on the thymus and immune regulation. It is researched for supporting immune balance and healthy aging.

Thymagen (Thymogen) is a short synthetic peptide bioregulator related to thymic function, studied for immune modulation. It is researched for supporting and balancing immune responses.

Thymulin is a zinc-dependent thymic nonapeptide hormone that supports T-cell maturation and modulates immune and neuroendocrine signaling. It is studied as an immunoregulatory and anti-inflammatory agent.

TRH (protirelin) is the tripeptide hypothalamic hormone that triggers pituitary release of TSH and prolactin. It is also studied for neurostimulant, arousal, and mood-related central nervous system effects.

Tripeptide-29 is a collagen-biomimetic tripeptide used in topical skincare to signal fibroblasts toward collagen production. It is studied for firmness, elasticity, and overall skin matrix support.

Triptorelin is a long-acting synthetic GnRH agonist used clinically to suppress sex-hormone production after an initial flare. It is applied in prostate cancer, endometriosis, precocious puberty, and fertility protocols.

Vesilute is a short bioregulator peptide studied for effects on the microvasculature and skin around the eyes. It is associated with reducing periorbital puffiness and supporting capillary tone.

Vesugen is a short tripeptide bioregulator studied for support of the vascular system and blood-vessel wall integrity. It is part of the Khavinson peptide family aimed at tissue-specific regulation.

Vialox is a topical pentapeptide marketed as a needle-free muscle-relaxing cosmetic ingredient. It is studied for softening expression lines by reducing local muscle contraction at the skin surface.

Vilon is a synthetic dipeptide bioregulator from the Khavinson family studied for immune modulation and anti-aging effects. It is associated with restoring physiological function in thymus and other tissues.

VIP (vasoactive intestinal peptide) is a 28-amino-acid signaling peptide with vasodilatory, anti-inflammatory, and immunoregulatory actions. It is studied intranasally in protocols for chronic inflammatory and biotoxin-related illness.

MIF-1 (Pro-Leu-Gly-NH2) is a hypothalamic tripeptide studied for dopaminergic modulation and antidepressant-like effects. It is also known historically as melanocyte-inhibiting factor.

An N-acetylated analog of larazotide acetate, an octapeptide studied as a tight-junction regulator intended to reduce intestinal permeability (leaky gut). The N-acetyl modification is marketed to improve enzymatic stability of the parent peptide.

A synthetic dipeptide-derived nootropic developed in Russia, structurally related to the racetam family. It is studied for memory, learning and neuroprotective effects at very low milligram doses.

A 33-amino-acid neuropeptide produced in the lateral hypothalamus that regulates wakefulness, arousal, appetite and energy homeostasis. It is studied for its powerful promotion of alertness and sleep-wake stability.

A 28-amino-acid hypothalamic neuropeptide that, alongside Orexin A, regulates arousal, wakefulness and feeding. It shows relative selectivity for the OX2R receptor subtype.

A small-molecule mitochondrial protonophore (uncoupler) studied as a metabolic compound for fat loss and metabolic health. It is not a peptide but is commonly sold alongside research peptides.

A glycoprotein hormone produced in pregnancy that mimics luteinizing hormone, used clinically to stimulate gonadal function. It is studied to support testosterone production and fertility.

A heptapeptide consisting of the ACTH 4-7 fragment extended with a Pro-Gly-Pro tail, better known as the peptide Semax. It is studied as a nootropic and neuroprotective agent.

A synthetic peptide comprising the first 24-34 N-terminal residues of adrenocorticotropic hormone (tetracosactide/cosyntropin family), which retains full corticotropic activity. It is used clinically to stimulate adrenal cortisol production and diagnostically to test adrenal function.

A research peptide related to delta sleep-inducing peptide (DSIP) chemistry, marketed for its potential effects on sleep regulation and stress modulation. Human data are minimal and it remains an investigational research compound.

A nonapeptide oxytocin variant referring to the nine-amino-acid oxytocin sequence, studied for its roles in bonding, mood, social behavior and reproductive physiology. It is sold as a research-grade analog of native oxytocin.

Melatonin is the body's primary circadian hormone, secreted by the pineal gland to signal darkness and regulate sleep timing. It is widely studied as a chronobiotic and antioxidant research compound. Note: Melatonin is a small-molecule hormone, not a peptide, though it appears in some research-compound catalogs.

SKF-110679 is an early synthetic growth hormone secretagogue peptide studied for its ability to stimulate growth hormone release. It is a research-grade compound predating modern GHRPs.

Deslorelin is a potent synthetic GnRH (gonadotropin-releasing hormone) agonist used primarily in veterinary reproductive medicine. It downregulates the reproductive axis after an initial stimulatory phase.

Teriparatide is the recombinant N-terminal 1-34 fragment of human parathyroid hormone and an FDA-approved anabolic therapy for osteoporosis. It builds bone when given as a once-daily intermittent dose.

Ghrelin Acetate is the acetate salt of ghrelin, the endogenous gut-derived hormone that drives hunger and stimulates growth hormone release. It is studied for appetite and GH-axis research.

Erythropoietin (EPO) is a glycoprotein hormone, produced mainly by the kidneys, that stimulates red blood cell production. Recombinant EPO is an established clinical therapy for anemia.

A4 Amyloid Beta refers to the amyloid-beta peptide derived from the amyloid precursor protein and central to Alzheimer's disease research. It is used purely as a research reagent for neurodegeneration studies. This is a neurotoxic laboratory reagent intended strictly for in-vitro research; it is not for administration.

Human Relaxin-2 is a peptide hormone with vasodilatory and anti-fibrotic properties, also developed clinically as serelaxin. It is studied for cardiovascular and tissue-remodeling research.

Liraglutide is an FDA-approved GLP-1 receptor agonist used for type 2 diabetes and chronic weight management. Its fatty-acid modification gives it a once-daily dosing profile.

A three-part research blend combining the lipolytic HGH Fragment 176-191 with the GHRH analog CJC-1295 (No DAC) and the selective ghrelin-receptor agonist Ipamorelin. It is studied for its combined effect on endogenous growth hormone release and fat metabolism.

A research blend pairing the GHRH analog Sermorelin with the growth hormone-releasing peptide GHRP-2. The combination is studied for synergistic stimulation of endogenous growth hormone.

A research blend combining the GHRH analog Sermorelin with the ghrelin-receptor agonist GHRP-6. It is studied for synergistic growth hormone release and appetite stimulation.

A triple research blend pairing the GHRH analog Sermorelin with two ghrelin-receptor agonists, GHRP-6 and GHRP-2. It is studied for maximal synergistic stimulation of endogenous growth hormone.

A widely studied research blend combining the GHRH analog Sermorelin with the highly selective ghrelin-receptor agonist Ipamorelin. It is examined for clean, synergistic growth hormone release with minimal off-target effects.

A potent three-part research blend pairing two GHRH analogs, Tesamorelin and CJC-1295 (No DAC), with the selective ghrelin agonist Ipamorelin. It is studied for strong synergistic GH release and visceral fat reduction.

A research blend combining the visceral-fat-reducing GHRH analog Tesamorelin with the selective ghrelin agonist Ipamorelin. It is studied for synergistic GH release with a favorable metabolic profile.

A research blend combining the GH secretagogues Ipamorelin and CJC-1295 (No DAC) with the telomere-associated peptide Epitalon. It is studied for combined growth hormone support and longevity-oriented effects.

A vendor-formulated multi-peptide research blend marketed around growth hormone secretagogue activity. It typically combines a GHRH analog with one or more ghrelin-receptor agonists for synergistic GH release.

Petrelintide is a long-acting amylin analog in phase 2/3 development for weight management, notable for producing meaningful weight loss with markedly less gastrointestinal burden than incretin-based drugs.

Amycretin — now assigned the international nonproprietary name zenagamtide — is a single peptide that agonizes both the GLP-1 and amylin receptors, combining two distinct appetite pathways in one molecule.

MariTide is a once-monthly peptide-antibody conjugate that activates the GLP-1 receptor while blocking the GIP receptor — the opposite GIP strategy from tirzepatide, and the most mechanistically unusual drug in late-stage obesity development.

An N-terminally acetylated form of Semax, modified to resist enzymatic breakdown. The acetylation itself is documented, but nearly all of the neurotrophic and clinical research that motivates interest in this compound was performed on unmodified Semax.

An N-terminally acetylated form of Selank, the Russian anxiolytic peptide derived from tuftsin. Unlike its Semax counterpart, the acetylated form of Selank has no dedicated published literature of its own -- every finding below comes from the parent peptide.

A long-acting injectable testosterone ester used clinically for testosterone replacement therapy (TRT) in men with diagnosed hypogonadism. Prescription medication.

A long-acting injectable testosterone ester used for testosterone replacement therapy. Clinically near-interchangeable with cypionate. Prescription medication.

A short-acting injectable testosterone ester requiring more frequent dosing. Less common for maintenance TRT. Prescription medication.

An aromatase inhibitor used off-label to control estrogen elevation on testosterone therapy. Prescription medication (approved for breast cancer).

A selective estrogen receptor modulator (SERM) that raises the body's own testosterone by increasing LH and FSH. Investigational; used off-label.

A selective estrogen receptor modulator (SERM) used off-label to raise endogenous testosterone and to restart natural production in post-cycle therapy. Prescription medication (approved for female fertility).

A steroidal (irreversible) aromatase inhibitor used off-label as an alternative to anastrozole for controlling estrogen on testosterone therapy. Prescription medication (approved for breast cancer).

A selective estrogen receptor modulator (SERM) used off-label to manage gynecomastia and in post-cycle therapy. Prescription medication (approved for breast cancer).

An adrenal prohormone that the body converts into testosterone and estrogen. Available over the counter as a supplement in the US; still a hormone precursor — use with medical guidance.

The upstream 'mother' hormone: a cholesterol-derived precursor to DHEA, progesterone, and downstream steroids, and a neurosteroid. Available OTC as a supplement; use with medical guidance.