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The Peptide Library.

A working reference of the peptides we research. Each entry includes mechanism, evidence base, and regulatory status.

A

PeptideOverviewCategoryStatus
Abaloparatide
Tymlos
PTHrP analog for osteoporosis.BoneRead
Acetyl tetrapeptide-3
Capixyl component
Hair follicle peptide for hair density.SkinCosmeticRead
Angiotensin II
Giapreza
Vasopressor for septic shock; ICU use only.CardiovascularRead
AOD-9604
Growth hormone fragment 177–191
Synthetic fragment of human growth hormone (amino acids 177–191). Not FDA-approved; investigational.MetabolicRead
Argireline
Acetyl hexapeptide-8
Topical muscle-relaxing cosmetic peptide.SkinCosmeticRead
Atrial natriuretic peptide
ANP · Carperitide
Endogenous cardiac peptide hormone. Not FDA-approved; investigational.CardiovascularResearch OnlyRead
Aviptadil
RLF-100 · Zyesami
Synthetic form of vasoactive intestinal peptide (VIP). Not FDA-approved; investigational.CardiovascularResearch OnlyRead

B

PeptideOverviewCategoryStatus
Bimatoprost
Latisse
Prostaglandin analog for eyelash growth.SkinRead
Bortezomib
Velcade
Proteasome inhibitor for multiple myeloma.OncologyRead
BPC-157
Body Protective Compound · PL 14736
Synthetic 15-amino-acid peptide derived from a gastric protein. Not FDA-approved; evidence is largely from animal studies.Tissue Repair ResearchRead
Bremelanotide
PT-141 · Vyleesi
Melanocortin receptor agonist FDA-approved (Vyleesi) only for premenopausal women with acquired, generalized HSDD.Sexual HealthRead

C

PeptideOverviewCategoryStatus
Cagrilintide
AM833
Long-acting amylin analog in clinical trials. Not FDA-approved.MetabolicResearch OnlyRead
Calcitonin salmon
Miacalcin · Fortical
Salmon calcitonin for osteoporosis and Paget disease.BoneRead
Cathelicidins
LL-37 family
Class of endogenous antimicrobial peptides. No FDA-approved drug product.AntimicrobialResearch OnlyRead
Cenderitide
CD-NP
Designer natriuretic peptide. Not FDA-approved; investigational.CardiovascularResearch OnlyRead
Cerebrolysin
Neurotrophic peptide mix
Mixture of peptides derived from porcine brain tissue. Not FDA-approved; approved in some countries outside the US.CognitiveRead
Cetrorelix
Cetrotide
GnRH antagonist for IVF protocols.HormonalRead
CJC-1295
Modified GRF 1-29 (no DAC)
Synthetic GHRH analog (modified GRF 1-29). Not FDA-approved; human data limited to early studies.Growth Hormone AxisRead
CJC-1295 with DAC
CJC-1295 DAC
Synthetic GHRH analog with a drug affinity complex (DAC) that extends its half-life. Not FDA-approved; human data limited to early studies.Growth Hormone AxisRead
Colistimethate
Coly-Mycin
Polypeptide antibiotic for multidrug-resistant gram-negative infections.AntimicrobialRead
Copper tripeptide-1
GHK-Cu (cosmetic form)
Topical formulation of GHK-Cu for cosmetic use.SkinCosmeticRead
Corticotropin
H.P. Acthar Gel · ACTH
Adrenocorticotropic hormone for infantile spasms and MS relapse.HormonalRead

D

PeptideOverviewCategoryStatus
Dalbavancin
Dalvance
Long-acting lipoglycopeptide for skin infections.AntimicrobialRead
Daptomycin
Cubicin
Cyclic lipopeptide antibiotic for gram-positive infections.AntimicrobialRead
Defensins
Alpha/beta defensins
Class of endogenous antimicrobial peptides. No FDA-approved drug product.AntimicrobialResearch OnlyRead
Degarelix
Firmagon
GnRH antagonist for prostate cancer.OncologyRead
Desmopressin
DDAVP · Stimate
Synthetic vasopressin analog for diabetes insipidus and bleeding disorders.HormonalRead
Dihexa
PNB-0408
Synthetic angiotensin IV analog. Not FDA-approved; evidence is preclinical.CognitiveResearch OnlyRead
DSIP
Delta sleep-inducing peptide
Naturally occurring nonapeptide first isolated in sleep research. Not FDA-approved; human data limited.SleepRead
Dulaglutide
Trulicity
Once-weekly GLP-1 agonist for type 2 diabetes.MetabolicRead

E

PeptideOverviewCategoryStatus
Enfuvirtide
Fuzeon
HIV fusion inhibitor.AntimicrobialRead
Epitalon
Epithalon · pineal tetrapeptide
Synthetic pineal tetrapeptide. Not FDA-approved; evidence is largely preclinical.LongevityRead
Exenatide
Byetta · Bydureon
GLP-1 agonist for type 2 diabetes management.MetabolicRead

F

PeptideOverviewCategoryStatus
FOXO4-DRI
Senolytic peptide
Synthetic FOXO4-targeting peptide. Not FDA-approved; evidence is preclinical.LongevityResearch OnlyRead

G

PeptideOverviewCategoryStatus
Ganirelix
Ganirelix acetate
GnRH antagonist for controlled ovarian stimulation.HormonalRead
GHK-Cu
Copper tripeptide-1
Naturally occurring copper-binding tripeptide used in topical cosmetics. Injectable forms are not FDA-approved.SkinRead
GHRP-2
Pralmorelin
Synthetic growth hormone secretagogue (GHRP class). Not FDA-approved; human data limited.Growth Hormone AxisRead
GHRP-6
Hexapeptide-2
Synthetic growth hormone secretagogue (GHRP class). Not FDA-approved; human data limited.Growth Hormone AxisRead
Glucagon
GlucaGen · Baqsimi · Gvoke
Pancreatic peptide hormone for severe hypoglycemia.MetabolicRead
Gonadorelin
GnRH · Factrel
Synthetic gonadotropin-releasing hormone (GnRH). Previously FDA-approved as Factrel; the brand product was discontinued. Current US supply is compounded and not FDA-approved.HormonalRead
Goserelin
Zoladex
GnRH agonist depot implant for prostate and breast cancer.OncologyRead

H

PeptideOverviewCategoryStatus
HCG
Human chorionic gonadotropin
Peptide hormone FDA-approved (Novarel, Pregnyl) for specific fertility and hypogonadism indications.HormonalRead
Hexarelin
Examorelin
Synthetic growth hormone secretagogue (GHRP class). Not FDA-approved; human data limited.Growth Hormone AxisRead
HGH Fragment 176-191
AOD variant
Synthetic fragment of human growth hormone (amino acids 176–191). Not FDA-approved; investigational.MetabolicRead
Histrelin
Vantas · Supprelin LA
GnRH agonist implant for central precocious puberty and prostate cancer.OncologyRead
Humanin
Mitochondrial-derived peptide
Endogenous mitochondrial-derived peptide. Not FDA-approved; evidence is preclinical.LongevityResearch OnlyRead

I

PeptideOverviewCategoryStatus
Insulin aspart
Novolog · Fiasp
Rapid-acting insulin analog for diabetes.MetabolicRead
Insulin degludec
Tresiba
Ultra-long-acting basal insulin for diabetes.MetabolicRead
Insulin glargine
Lantus · Basaglar
Long-acting basal insulin for diabetes.MetabolicRead
Insulin lispro
Humalog · Admelog
Rapid-acting insulin analog for diabetes.MetabolicRead
Ipamorelin
Selective GHRP
Synthetic growth hormone secretagogue (GHRP class). Not FDA-approved; human data limited to early studies.Growth Hormone AxisRead

K

PeptideOverviewCategoryStatus
Kisspeptin
KP-10 · Kisspeptin-54
Endogenous hormone of the reproductive (HPG) axis. Not FDA-approved; investigational.HormonalRead
KPV
Lysine-proline-valine tripeptide
Tripeptide (lysine-proline-valine) derived from alpha-MSH. Not FDA-approved; evidence is largely preclinical.Tissue Repair ResearchRead

L

PeptideOverviewCategoryStatus
Lactoferrin peptides
Lactoferricin fragments
Peptide fragments derived from the protein lactoferrin. No FDA-approved drug product.ImmuneResearch OnlyRead
Lanreotide
Somatuline Depot
Long-acting somatostatin analog for acromegaly and NETs.HormonalRead
Leuprolide
Lupron · Eligard
GnRH agonist for prostate cancer, endometriosis, and IVF.OncologyRead
Linaclotide
Linzess
Guanylate cyclase-C agonist for IBS-C and chronic constipation.GIRead
Liraglutide
Victoza · Saxenda
Daily GLP-1 agonist for type 2 diabetes and obesity.MetabolicRead
Lixisenatide
Adlyxin
Once-daily GLP-1 agonist for type 2 diabetes.MetabolicRead
LL-37
Cathelicidin
The only known human cathelicidin antimicrobial peptide. Not FDA-approved; investigational.AntimicrobialRead
Lutetium Lu 177 dotatate
Lutathera
Radiolabeled somatostatin analog for gastroenteropancreatic NETs.OncologyRead

M

PeptideOverviewCategoryStatus
Macimorelin
Macrilen
Oral ghrelin agonist for GH deficiency diagnosis.HormonalRead
Matrixyl
Palmitoyl pentapeptide-4
Topical collagen-stimulating cosmetic peptide.SkinCosmeticRead
Mazdutide
LY3305677 · IBI362
Dual GLP-1/glucagon receptor agonist approved in China. Not FDA-approved.MetabolicResearch OnlyRead
Melanotan I
Afamelanotide · Scenesse
Melanocortin analog approved for erythropoietic protoporphyria.SkinRead
Melanotan II
MT-II
Synthetic melanocortin receptor agonist. Not FDA-approved; significant safety concerns.SkinResearch OnlyRead
MK-677
Ibutamoren
Oral, non-peptide ghrelin receptor agonist. Not FDA-approved; investigational.Growth Hormone AxisResearch OnlyRead
MOTS-c
Mitochondrial-derived peptide
Endogenous mitochondrial-derived peptide. Not FDA-approved; evidence is largely preclinical.MetabolicRead

N

PeptideOverviewCategoryStatus
N-Acetyl Selank Amidate
NA-Selank-Amidate
Chemically modified analog of Selank. Not FDA-approved; investigational.CognitiveResearch OnlyRead
N-Acetyl Semax Amidate
NA-Semax-Amidate
Chemically modified analog of Semax. Not FDA-approved; investigational.CognitiveResearch OnlyRead
Nafarelin
Synarel
Nasal GnRH agonist for endometriosis and precocious puberty.HormonalRead
Nesiritide
Natrecor
Recombinant BNP for acute decompensated heart failure.CardiovascularRead
Noopept
GVS-111
Synthetic dipeptide derivative. Not FDA-approved; investigational.CognitiveResearch OnlyRead

O

PeptideOverviewCategoryStatus
Octreotide
Sandostatin
Somatostatin analog for acromegaly, carcinoid, and VIPoma.HormonalRead
Oritavancin
Orbactiv · Kimyrsa
Single-dose lipoglycopeptide for skin infections.AntimicrobialRead
Oxytocin
Pitocin · Syntocinon
Posterior pituitary hormone FDA-approved (Pitocin) for labor induction and postpartum use.HormonalRead

P

PeptideOverviewCategoryStatus
Palmitoyl tetrapeptide-7
PAL-GQPR
Anti-inflammatory cosmetic peptide.SkinCosmeticRead
Palmitoyl tripeptide-1
PAL-GHK
Cosmetic collagen-stimulating peptide.SkinCosmeticRead
Pasireotide
Signifor · Signifor LAR
Somatostatin analog for Cushing disease and acromegaly.HormonalRead
PDRN
Polydeoxyribonucleotide
Polydeoxyribonucleotide (DNA fragments sourced from salmon). Injectable forms are not FDA-approved.Tissue Repair ResearchRead
PEG-MGF
Pegylated mechano growth factor
Pegylated form of mechano growth factor, an IGF-1 splice variant. Not FDA-approved; evidence is preclinical.Tissue Repair ResearchResearch OnlyRead
Pentosan polysulfate
Elmiron
Semi-synthetic polysulfated polysaccharide for interstitial cystitis.GIRead
Plecanatide
Trulance
Guanylate cyclase-C agonist for chronic constipation.GIRead
Pramlintide
Symlin
Amylin analog for glycemic control in insulin-dependent diabetes.MetabolicRead

S

PeptideOverviewCategoryStatus
Selank
TP-7 heptapeptide
Synthetic analog of the immune peptide tuftsin. Not FDA-approved; human data limited.CognitiveRead
Semaglutide
GLP-1 receptor agonist for metabolic disease and weight management.MetabolicRead
Semax
ACTH 4-10 analog
Synthetic analog of an ACTH fragment (ACTH 4-10). Not FDA-approved; human data limited.CognitiveRead
Sermorelin
GRF 1-29
Synthetic GHRH analog (GRF 1-29). Previously FDA-approved as Geref; the brand product was discontinued. Current US supply is compounded and not FDA-approved.Growth Hormone AxisRead
Setmelanotide
Imcivree
MC4R agonist for rare genetic obesity.MetabolicRead
SS-20
Mitochondrial peptide
Synthetic mitochondria-targeting peptide. Not FDA-approved; evidence is preclinical.LongevityResearch OnlyRead
SS-31
Elamipretide · Bendavia
Mitochondria-targeting peptide. FDA-approved (elamipretide) only for Barth syndrome.LongevityResearch OnlyRead

T

PeptideOverviewCategoryStatus
TA1 (alternate naming)
Thymosin alpha-1 alternate designation
Same molecule as Thymosin alpha-1; alternate naming.ImmuneRead
TB-500
Thymosin Beta-4 fragment
Synthetic fragment of thymosin beta-4. Not FDA-approved; evidence is largely from animal studies.Tissue Repair ResearchRead
Teduglutide
Gattex · Revestive
GLP-2 analog for short bowel syndrome.GIRead
Teriparatide
Forteo · Bonsity
Recombinant PTH 1-34 for severe osteoporosis.BoneRead
Terlipressin
Terlivaz
Vasopressin analog for hepatorenal syndrome.CardiovascularRead
Tesamorelin
Egrifta
GHRH analog approved for HIV-associated lipodystrophy.MetabolicRead
Thymosin alpha-1
Zadaxin
Synthetic thymic peptide. Not FDA-approved; approved in some countries outside the US.ImmuneRead
Thymosin beta-4
Tβ4 (full-length)
Naturally occurring 43-amino-acid peptide (full-length thymosin beta-4). Not FDA-approved; investigational.Tissue Repair ResearchRead
Thymulin
FTS-Zn
Zinc-dependent thymic peptide hormone. No FDA-approved drug product.ImmuneResearch OnlyRead
Tirzepatide
Dual GIP/GLP-1 receptor agonist FDA-approved as Mounjaro and Zepbound.MetabolicRead
Triptorelin
Trelstar
GnRH agonist for prostate cancer.OncologyRead

V

PeptideOverviewCategoryStatus
Vancomycin
Vancocin
Glycopeptide antibiotic for gram-positive infections including MRSA.AntimicrobialRead
Vasopressin
Pitressin · Vasostrict
Posterior pituitary hormone; vasopressor and diabetes insipidus.CardiovascularRead

Z

PeptideOverviewCategoryStatus
Ziconotide
Prialt
Synthetic ω-conotoxin; intrathecal analgesic for chronic pain.PainRead
A note on this library

This library lists peptides we research. Some peptides seen elsewhere online are omitted deliberately — either the human evidence is too thin, or the regulatory pathway does not permit it.