The peptide library

Body Protection Compound · Pentadecapeptide BPC 157

Thymosin Beta-4 · 43-amino-acid tissue-repair peptide

C-terminal tripeptide of α-MSH · anti-inflammatory

EPO-derived 11-mer · innate repair receptor agonist · tissue-protective, non-erythropoietic

Selective growth-hormone secretagogue · Pentapeptide ghrelin-receptor agonist

Long-acting GHRH analog · albumin-binding GH secretagogue

Stabilized GHRH analog · FDA-approved for HIV-associated visceral fat

Growth-hormone-releasing hormone analog · GRF(1-29)NH₂

Growth-hormone-releasing peptide · ghrelin-receptor (GHS-R1a) agonist

Growth-hormone-releasing peptide · ghrelin-receptor (GHS-R1a) agonist · Japanese diagnostic agent

Growth-hormone-releasing peptide · ghrelin-receptor (GHS-R1a) agonist

Long-[Arg³] Insulin-like Growth Factor 1 · 83-AA IGF-1 analog

des(1-3) Insulin-like Growth Factor 1 · 67-AA truncated IGF-1

Mechano-Growth Factor · 24-AA IGF-1 Ec splice-variant E-domain peptide

PEGylated Mechano-Growth Factor · long-acting conjugate of the MGF E-domain peptide

Myostatin-antagonist protein · real biology, hype borrowed from gene therapy · WADA-banned

Myostatin/activin 'ligand trap' fusion protein · discontinued over a bleeding signal · WADA-banned

Investigational GLP-1/GIP/glucagon triple agonist (Retatrutide-class)

Small-molecule NNMT inhibitor · metabolic

Modified GH lipolytic fragment · metabolic / fat loss

Unmodified GH C-terminal fragment · metabolic / fat loss

FDA-approved GLP-1 receptor agonist · once-weekly subcutaneous

FDA-approved dual GIP + GLP-1 receptor co-agonist · once-weekly (SC)

Investigational long-acting amylin analog · once-weekly (SC) · not FDA-approved

Investigational glucagon (GCGR) + GLP-1 dual agonist · once-weekly (SC) · not FDA-approved

FDA-approved first-generation GLP-1 receptor agonist · once-daily (SC)

Khavinson 'Cytogen' synthetic tetrapeptide · claimed pancreas/glucose bioregulator · single-school evidence

Fat-vasculature-ablating peptide · animal proof-of-concept only · no completed human trial

Synthetic ACTH(4–10) analog · neuroprotective / nootropic

Synthetic tuftsin analog · anxiolytic

Porcine-brain peptide mixture · approved abroad, not FDA/EMA · IV/IM

CNTF-derived neurogenic tetrapeptide · mice/rats only · no human trials

Longer-acting Semax variant · evidence borrowed from plain Semax · intranasal

Longer-acting Selank variant · evidence borrowed from plain Selank · intranasal

Khavinson 'Cytogen' synthetic tripeptide · claimed brain/CNS bioregulator · single-school evidence

Khavinson 'Cytogen' synthetic tetrapeptide · derived from the Cortexin brain-cortex extract · single-school evidence

Animal-cortex peptide extract · Russia/CIS-approved, not FDA/EMA · IM

TREK-1 (KCNK2) channel blocker · spadin-derived · animal-only antidepressant research peptide

Nonapeptide · evocative name, thin and contradictory evidence · no receptor

Copper-binding tripeptide · skin & tissue remodeling

Copper-binding tripeptide (Ala-His-Lys) · hair-follicle research

Mitochondrial-derived peptide · metabolic & exercise biology

Nicotinamide adenine dinucleotide · redox coenzyme (not a peptide)

AEDG tetrapeptide · Khavinson pineal bioregulator

GSH · the cell's principal intracellular antioxidant (a tripeptide)

Mitochondria-targeting tetrapeptide · failed most trials · narrow 2025 FDA approval

Endogenous mitochondrial-derived peptide · real biology, no human trials

Senolytic peptide · one mouse paper · zero human trials

Khavinson 'Cytogen' synthetic tripeptide · claimed vascular/endothelial bioregulator · single-school evidence

Khavinson 'Cytogen' synthetic tetrapeptide · marketed as a 'liver' peptide · single-school chromatin evidence

Khavinson 'Cytogen' synthetic tetrapeptide · marketed for testosterone/prostate · but the actual data are thyroid-only, in birds, single-school

Khavinson 'Cytomax' bovine vascular-tissue extract · NOT a defined molecule · zero independent literature under its own name

Tα1 / thymalfasin · thymic immunomodulatory peptide (Zadaxin)

The only human cathelicidin · host-defense peptide · double-edged immunology

Thymic nonapeptide hormone · active only when zinc-bound · historic immunology

Synthetic Glu-Trp dipeptide · Russian immunomodulator · same molecule as Western IM-862

Synthetic Lys-Glu dipeptide · Khavinson 'short peptide bioregulator' · immune / geroprotector claims

Thymus-gland polypeptide EXTRACT (a mixture, not one molecule) · Khavinson/Morozov immunomodulator

Commercial Khavinson-line 'thymus bioregulator' · ZERO product-specific peer-reviewed evidence

Commercial Khavinson 'short peptide' immune bioregulator · chemistry UNVERIFIABLE · single-record evidence

Khavinson 'Cytogen' synthetic tripeptide · marketed as a lung/respiratory bioregulator · single in-vitro immune study, claims unproven

p53/HDM-2-derived research peptide · preclinical only · FDA-warned

Shorter PNC-27 analog · p53/HDM-2-derived · preclinical only

Investigational reproductive-axis peptide · KISS1R (GPR54) agonist

Native GnRH decapeptide · pulsatile-stimulates / continuous-suppresses

Glycoprotein LH-analog hormone · FDA-approved (fertility) · prohibited in males (sport)

Cyclic nonapeptide · FDA-approved uterotonic · contested "love hormone"

Cyclic melanocortin agonist · pigmentation & sexual health

FDA-approved melanocortin receptor agonist · on-demand (SC + intranasal)

Endogenous copper-binding tripeptide matrikine · the bare, copper-FREE ligand · the famous biology belongs to GHK-Cu

Linear α-MSH analog · the one that became an approved drug (Scenesse) · MC1R agonist

Bacteriostatic Water for Injection, USP · benzyl-alcohol-preserved sterile water