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Peptide Database

265 therapeutic peptides with research summaries, clinical findings, and regulatory status.

Showing 1–18 of 18 in ImmuneClear filters
ImmuneInvestigational

Thymalin

A peptide bioregulator originally extracted from bovine thymus gland, consisting of a mixture of polypeptides that modulate immune function. Thymalin…

Intramuscular injection
ImmuneResearch Phase

LL-37

The only human cathelicidin antimicrobial peptide, a 37-amino acid cationic peptide cleaved from the precursor protein hCAP18. LL-37 disrupts…

Subcutaneous injection, Topical
ImmuneInvestigational

VIP (Vasoactive Intestinal Peptide)

A 28-amino acid neuropeptide widely distributed in the central and peripheral nervous systems and immune cells. VIP acts through VPAC1 and VPAC2…

Intranasal, Intravenous, Subcutaneous injection
ImmuneInvestigational

Thymosin Alpha 1 (Zadaxin)

A 28-amino acid peptide originally isolated from thymic tissue (thymosin fraction 5) that serves as a potent immunomodulator. Thymosin alpha 1…

Subcutaneous injection
ImmuneInvestigational

Thymopentin (TP-5)

A synthetic pentapeptide (Arg-Lys-Asp-Val-Tyr) corresponding to residues 32-36 of thymopoietin, a thymic hormone involved in T-cell differentiation.…

Subcutaneous injection, Intramuscular injection
ImmuneResearch Phase

Thymulin

A zinc-containing nonapeptide (facteur thymique serique) produced exclusively by thymic epithelial cells. Thymulin requires zinc for biological…

Subcutaneous injection, Intranasal
ImmuneResearch Phase

KPV

A C-terminal tripeptide fragment (Lys-Pro-Val) of alpha-melanocyte-stimulating hormone (alpha-MSH) that retains potent anti-inflammatory activity…

Oral, Topical, Subcutaneous injection
ImmuneFDA Approved

Icatibant (Firazyr)

A synthetic decapeptide bradykinin B2 receptor antagonist containing five non-natural amino acids for enhanced stability and receptor selectivity.…

Subcutaneous injection
ImmuneInvestigational

Thymogen (Glutamyl-Tryptophan)

Thymogen is a dipeptide consisting of glutamic acid and tryptophan, originally isolated from thymic extracts and proposed to function as an…

Subcutaneous injection, Topical
ImmuneInvestigational

Thymostimulin (TP-1)

Thymostimulin is a polypeptide extract derived from bovine thymus tissue containing multiple biologically active thymic peptides. It acts on…

Intramuscular injection, Subcutaneous injection
ImmuneResearch Phase

Splenopentin

Splenopentin is a synthetic pentapeptide (Arg-Lys-Glu-Val-Tyr) corresponding to residues 32 to 36 of the splenic hormone splenin. It modulates immune…

Subcutaneous injection, Intravenous
ImmuneResearch Phase

Bursin

Bursin is a tripeptide (Lys-His-Gly) originally isolated from the bursa of Fabricius in avian species. It promotes B-lymphocyte differentiation and…

Subcutaneous injection
ImmuneInvestigational

Tuftsin

Tuftsin is a naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) cleaved from the Fc portion of the heavy chain of immunoglobulin G. It binds to…

Subcutaneous injection, Intravenous
ImmuneInvestigational

Imuthiol (Diethyldithiocarbamate)

Imuthiol is the sodium salt of diethyldithiocarbamate, a small molecule rather than a peptide, historically explored for immune modulation and…

Intravenous, Oral
ImmuneResearch Phase

Alpha-MSH

Alpha-melanocyte-stimulating hormone (alpha-MSH) is a 13-amino-acid peptide derived from proopiomelanocortin (POMC). It acts via melanocortin…

Subcutaneous injection, Intravenous
ImmuneResearch Phase

Beta-Defensin 2

Beta-defensin 2 (hBD-2) is an antimicrobial peptide of approximately 40 amino acids produced by epithelial cells in response to infection or…

Topical, Subcutaneous injection
ImmuneResearch Phase

Beta-Defensin 3

Beta-defensin 3 (hBD-3) is an antimicrobial peptide of approximately 45 amino acids with potent activity against a wide range of pathogens, including…

Topical, Subcutaneous injection
ImmuneResearch Phase

Granulysin

Granulysin is a 15-kDa antimicrobial and cytolytic protein expressed by cytotoxic T lymphocytes and natural killer cells. It disrupts microbial and…

Intravenous, Subcutaneous injection

All 265 peptides

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Peptide therapies discussed on this site may not be FDA-approved for all listed indications. Individual results vary. The Peptide Association does not prescribe, diagnose, or treat any medical condition. Clinicians in our network are independently licensed practitioners; the Association reviews licensure but does not employ or directly supervise these clinicians.

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