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Peptide Library

Browse Research Peptides

Find which verified vendors sell a specific peptide, ranked by PVS quality score.

23 vendors

BPC-157

Healing

BPC-157 (Body Protection Compound) is a pentadecapeptide derived from a protective protein found in human gastric juice. Research suggests it may play a role in tissue repair, angiogenesis, and gastrointestinal health. It has become one of the most studied peptides for tissue regeneration research.

Tissue repairTendon healingGut health
1419.53 g/mol
22 vendors

TB-500

Healing

TB-500 is a synthetic fragment of the naturally-occurring protein Thymosin Beta-4. Research has focused on its potential role in cell migration, vascular development, and tissue repair — particularly in muscle and cardiac tissue recovery.

Tissue repairMuscle recoveryCardiac research
4963.5 g/mol
22 vendors

Semaglutide

GLP-1

Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist. It is one of the most widely studied peptides in metabolic research, with applications in glucose regulation and weight management studies.

Metabolic researchGlucose regulationWeight management studies
4113.58 g/mol
6 vendors

Tirzepatide

GLP-1

Tirzepatide is a dual GIP/GLP-1 receptor agonist — the first peptide of its kind to reach commercial availability. Research interest spans metabolic regulation, weight management studies, and cardiovascular outcomes.

Dual GIP/GLP-1 researchMetabolic studiesWeight management
4813.45 g/mol
6 vendors

GHK-Cu

Longevity

GHK-Cu is a naturally occurring copper-binding peptide tripeptide found in human plasma. Research has focused on its potential roles in skin regeneration, anti-inflammatory activity, and gene expression modulation.

Skin regenerationWound healingAnti-aging research
340.84 g/mol
23 vendors

CJC-1295

Growth Hormone

CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH). Research studies its effects on growth hormone secretion, with particular interest in its extended half-life version (CJC-1295 with DAC).

GH secretionBody composition researchSleep studies
3367.9 g/mol
4 vendors

Ipamorelin

Growth Hormone

Ipamorelin is a selective growth hormone secretagogue and one of the most well-studied GHRPs. Research suggests it stimulates growth hormone release without significantly affecting cortisol or prolactin levels.

GH releaseBody compositionSleep quality research
711.85 g/mol
7 vendors

NAD+

Longevity

NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme central to metabolism and cellular energy production. Research has expanded significantly in longevity science, focusing on its role in mitochondrial function and DNA repair.

Longevity researchMitochondrial functionDNA repair
663.43 g/mol
1 vendor

Epithalon

Longevity

Epithalon is a synthetic tetrapeptide developed from the natural pineal gland peptide epithalamin. Research focuses on its potential role in telomerase activation, circadian rhythm regulation, and longevity studies.

Telomere researchCircadian rhythmPineal function
390.35 g/mol
6 vendors

Selank

Nootropic

Selank is a synthetic heptapeptide analog of tuftsin, developed in Russia. Research has investigated its potential anxiolytic and nootropic properties, particularly in stress-response studies.

Anxiety researchCognitive studiesImmunomodulation
751.87 g/mol
1 vendor

PT-141

Melanocortin

PT-141 (Bremelanotide) is a synthetic analog of alpha-melanocyte-stimulating hormone. Research has focused on its melanocortin receptor activity, particularly MC3R and MC4R pathways.

Melanocortin researchSexual health studiesAppetite research
1025.2 g/mol
3 vendors

KPV

Immune

KPV is a tripeptide derived from alpha-melanocyte-stimulating hormone. Research has explored its anti-inflammatory and immunomodulatory properties, particularly in gastrointestinal inflammation studies.

Anti-inflammatoryGI researchAutoimmune studies
412.53 g/mol
6 vendors

Retatrutide

GLP-1

Retatrutide is an investigational triple agonist peptide targeting GLP-1, GIP, and glucagon receptors. It is being studied in Phase 3 trials by Eli Lilly for metabolic research endpoints including body weight and glycemic parameters.

Metabolic researchWeight studiesGlycemic control
4731.3 g/mol
0 vendors

Survodutide

GLP-1

Survodutide is an investigational dual agonist peptide that activates both GLP-1 and glucagon receptors. It is under clinical investigation by Boehringer Ingelheim and Zealand Pharma for metabolic and hepatic research endpoints.

Metabolic researchMASH studiesWeight studies
4857.6 g/mol
0 vendors

Cagrilintide

Metabolic

Cagrilintide is a long-acting amylin analog being studied as a standalone and in combination with semaglutide (CagriSema). Research focuses on satiety signaling and its role in metabolic studies.

Amylin signalingSatiety researchMetabolic studies
3751.4 g/mol
2 vendors

Tesamorelin

Growth Hormone

Tesamorelin is a stabilized analog of growth hormone-releasing hormone (GHRH) that stimulates endogenous GH secretion from the pituitary. It has been studied extensively in the context of visceral adipose tissue research.

GHRH analogVisceral fat researchIGF-1 studies
5195.8 g/mol
0 vendors

Sermorelin

Growth Hormone

Sermorelin is a synthetic 29-amino acid fragment corresponding to the biologically active portion of GHRH. It is studied for its ability to stimulate pulsatile GH release via the pituitary.

GHRH fragmentPituitary stimulationIGF-1 studies
3358.0 g/mol
0 vendors

Hexarelin

Growth Hormone

Hexarelin is a synthetic hexapeptide growth hormone secretagogue and a potent ghrelin receptor agonist. Research has explored its effects on GH release and cardiac tissue.

GHS-R agonismGH secretionCardiac research
887.03 g/mol
0 vendors

GHRP-2

Growth Hormone

GHRP-2 is a synthetic growth hormone releasing peptide and ghrelin receptor agonist. It is studied for its stimulation of GH release and is commonly paired with GHRH analogs in research.

GH secretagogueGhrelin receptorAppetite research
817.95 g/mol
0 vendors

GHRP-6

Growth Hormone

GHRP-6 is a synthetic hexapeptide GH secretagogue that acts on the ghrelin receptor. Research has documented strong effects on appetite signaling in addition to GH release.

GH secretagogueAppetite researchGhrelin receptor
872.44 g/mol
0 vendors

MK-677 (Ibutamoren)

Growth Hormone

MK-677, also known as ibutamoren, is an orally bioavailable non-peptide ghrelin receptor agonist. It is studied for its ability to sustain elevations in GH and IGF-1 following once-daily oral dosing.

Oral GH secretagogueIGF-1 studiesAppetite research
528.67 g/mol
2 vendors

AOD-9604

Metabolic

AOD-9604 is a modified fragment of the C-terminus of human growth hormone (residues 176-191). Research has investigated its lipolytic activity in adipose tissue independent of GH-receptor signaling.

Lipolysis researchGH fragmentAdipose studies
1815.08 g/mol
4 vendors

Semax

Nootropic

Semax is a synthetic heptapeptide analog of ACTH(4-10) developed in Russia. It is studied for effects on BDNF expression, neurotrophic signaling, and cognitive endpoints.

BDNF modulationCognitive researchNeuroprotection
813.94 g/mol
0 vendors

Cerebrolysin

Nootropic

Cerebrolysin is a peptide preparation derived from enzymatic hydrolysis of purified porcine brain proteins. It is studied for neurotrophic-like activity and has been investigated in stroke and dementia research contexts.

Neurotrophic researchStroke studiesDementia research
Mixture (peptides <10 kDa)
0 vendors

Dihexa

Nootropic

Dihexa is a small orally active angiotensin IV analog developed at Washington State University. Research has investigated its reported effects on hepatocyte growth factor (HGF/c-Met) signaling and synaptogenesis.

HGF/c-Met signalingSynaptogenesisCognitive research
458.6 g/mol
0 vendors

P21

Nootropic

P21 is a short peptide derived from a region of ciliary neurotrophic factor (CNTF). It is studied for its reported ability to mimic neurotrophic signaling and support neurogenesis in preclinical models.

CNTF mimeticNeurogenesisCognitive research
860.9 g/mol
6 vendors

MOTS-c

Longevity

MOTS-c is a 16-amino acid mitochondrial-derived peptide encoded within the 12S rRNA region of mitochondrial DNA. Research has focused on its role in metabolic homeostasis, insulin sensitivity, and AMPK activation.

Mitochondrial peptidesAMPK signalingMetabolic research
2174.6 g/mol
0 vendors

Humanin

Longevity

Humanin is a 24-amino acid mitochondrial-derived peptide encoded within the 16S rRNA region. It is studied for cytoprotective signaling through the FPRL1 receptor and for effects on metabolic and neurodegeneration models.

Mitochondrial peptidesCytoprotectionNeurodegeneration research
2687.1 g/mol
0 vendors

5-Amino-1MQ

Metabolic

5-Amino-1MQ is a small-molecule inhibitor of nicotinamide N-methyltransferase (NNMT). Research has investigated its effects on adipocyte metabolism, NAD+ salvage, and body composition in preclinical models.

NNMT inhibitionNAD+ metabolismAdipocyte research
159.19 g/mol
0 vendors

SS-31 (Elamipretide)

Longevity

SS-31, also known as elamipretide, is a cell-permeable tetrapeptide that selectively associates with cardiolipin on the inner mitochondrial membrane. Research focuses on mitochondrial bioenergetics and ROS reduction in disease models.

Mitochondrial researchCardiolipin bindingCardiac studies
639.79 g/mol
4 vendors

Thymosin Alpha-1

Immune

Thymosin Alpha-1 is a 28-amino acid acetylated peptide originally isolated from thymic tissue. It is studied for its immunomodulatory effects on T-cell maturation and has been investigated in infectious disease and oncology research contexts.

T-cell modulationImmune researchAntiviral studies
3108.3 g/mol
2 vendors

LL-37

Immune

LL-37 is the sole human cathelicidin-derived antimicrobial peptide, a 37-residue cationic host defense peptide. Research has characterized its direct antimicrobial activity and immunomodulatory signaling.

Antimicrobial peptideHost defenseWound research
4493.3 g/mol
0 vendors

Thymosin Beta-4

Healing

Thymosin Beta-4 is a 43-amino acid G-actin sequestering peptide that occurs naturally in most mammalian cells. Research has investigated its roles in angiogenesis, cell migration, and tissue repair, distinct from the TB-500 synthetic fragment.

Actin regulationAngiogenesisTissue repair
4963.4 g/mol
4 vendors

Melanotan II

Melanocortin

Melanotan II is a synthetic cyclic analog of alpha-MSH that non-selectively activates melanocortin receptors (MC1R, MC3R, MC4R, MC5R). It has been studied for effects on melanogenesis and sexual response signaling.

Melanocortin agonismPigmentation researchSexual response
1024.18 g/mol
0 vendors

Melanotan I (Afamelanotide)

Melanocortin

Melanotan I, marketed as afamelanotide, is a synthetic 13-amino acid analog of alpha-MSH with selectivity for MC1R. It has been clinically studied and approved in some regions for erythropoietic protoporphyria.

MC1R agonismPhotoprotectionEPP studies
1646.85 g/mol
0 vendors

IGF-1 LR3

Growth Hormone

IGF-1 LR3 (Long R3 IGF-1) is a modified analog of insulin-like growth factor 1 with reduced binding to IGFBPs, extending its bioactive half-life. It is studied for its effects on protein synthesis and cellular proliferation.

IGF-1 signalingMuscle researchHypertrophy studies
9117.0 g/mol
4 vendors

DSIP

Sleep

DSIP (Delta Sleep-Inducing Peptide) is a nonapeptide first isolated from rabbit cerebral venous blood during induced sleep. Research has investigated its effects on sleep architecture, stress response, and opioid withdrawal.

Sleep researchStress responseHPA axis
848.85 g/mol
0 vendors

Oxytocin

Sexual Health

Oxytocin is a nonapeptide hormone produced in the hypothalamus and released by the posterior pituitary. Research has explored its roles in social bonding, sexual response, and reproductive physiology.

Social bondingSexual responseReproductive physiology
1007.19 g/mol
0 vendors

Pinealon

Longevity

Pinealon is a short synthetic tripeptide developed by the St. Petersburg Institute of Bioregulation and Gerontology. Research has investigated its reported effects on neuronal survival, oxidative stress, and cognitive parameters in aging models.

Bioregulator peptidesNeuroprotectionAging research
357.4 g/mol
0 vendors

Follistatin 344

Healing

Follistatin 344 is a glycoprotein isoform that binds and neutralizes members of the TGF-beta superfamily, notably myostatin and activin. Research has investigated its effects on muscle mass regulation in preclinical models.

Myostatin inhibitionActivin bindingMuscle research
37800 g/mol (~37.8 kDa)

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