Peptide Research Database
Research-backed information on peptides — dosage, half-life, risks, and the latest peer-reviewed studies from PubMed.
KPV
A tripeptide (Lys-Pro-Val) derived from the C-terminal end of alpha-melanocyte stimulating hormone. Retains the potent anti-inflammatory and immunomodulatory activity of full α-MSH without causing skin tanning or sexual side effects. One of the cleanest anti-inflammatory peptides available, effective via oral, injectable, and topical routes.
LL-37
The only human cathelicidin antimicrobial peptide — a 37-amino-acid component of the innate immune system with broad-spectrum activity against bacteria, viruses, and fungi. Beyond antimicrobial defense, LL-37 promotes wound healing, modulates the inflammatory response, and stimulates angiogenesis at injury sites. Naturally produced by immune cells, epithelial cells, and keratinocytes in response to infection or tissue damage.
RG3
Ginsenoside Rg3 — a bioactive triterpenoid saponin compound derived from Panax ginseng. While not a peptide, it is frequently offered alongside peptide therapies in regenerative medicine clinics for its immune-modulating, anti-inflammatory, and anti-tumor properties. One of the most pharmacologically active ginsenosides, with research demonstrating effects on angiogenesis inhibition, immune cell activation, and cancer cell apoptosis.
Selank
A synthetic heptapeptide based on the endogenous immunomodulatory peptide tuftsin, with a Pro-Gly-Pro extension for enzymatic stability. Developed at the Russian Academy of Sciences as both an anxiolytic and a nootropic. Uniquely combines benzodiazepine-like anti-anxiety effects (without sedation or addiction) with cognitive enhancement through BDNF upregulation and immune modulation through its tuftsin core.
Thymalin
A thymic peptide extract originally developed in Russia by Dr. Vladimir Khavinson, containing a complex mixture of small peptides derived from young animal thymus glands. Modulates immune function by supporting thymic activity, T-cell maturation, and immune surveillance. One of the most established peptide preparations in Russian medicine, with decades of clinical use data, though Western clinical evidence remains limited.
Thymosin Alpha-1
A 28-amino-acid peptide naturally produced by the thymus gland, serving as a critical regulator of T-cell and dendritic cell function. One of the best-established immune-modulating peptides globally, with regulatory approval in over 35 countries (marketed as Zadaxin) for hepatitis B and C treatment and as a cancer immunotherapy adjuvant. The most clinically validated peptide immunomodulator, with decades of use in Asia and Europe.
Thymosin Beta-4
The full-length 43-amino-acid peptide naturally produced by the thymus gland — the parent molecule from which TB-500 is derived. Thymosin Beta-4 is the most abundant actin-sequestering protein in mammalian cells, playing a fundamental role in cell migration, tissue repair, wound healing, and anti-inflammatory responses throughout the body. The full-length form may offer broader biological activity than the TB-500 fragment alone.
Thymulin
A nonapeptide (9 amino acids) naturally secreted by thymic epithelial cells that requires zinc binding for full biological activity. Distinct from Thymalin (which is a thymic extract mixture). Plays a central role in T-cell maturation, immune system regulation, and maintenance of the zinc-thymulin axis that declines with aging. Thymulin levels decrease as the thymus involutes with age, contributing to immune senescence.
Vilon
A synthetic dipeptide (Lys-Glu) bioregulator developed as a thymus-targeting immune peptide. Studied for immune system modulation, thymic rejuvenation, and anti-aging effects. Part of the Khavinson peptide bioregulator family alongside Thymalin, Epithalon, and Cortexin. Designed to support T-cell maturation and restore age-related immune decline through peptide-mediated gene regulation in thymic tissue.
VIP
Vasoactive Intestinal Peptide — a 28-amino-acid neuropeptide found throughout the body, particularly in the nervous system, gut, and lungs. Functions as a potent vasodilator, anti-inflammatory agent, and immunomodulator. Most widely studied in the context of CIRS (Chronic Inflammatory Response Syndrome) and pulmonary hypertension, where it modulates excessive inflammatory signaling.
Recent Research
A novel exopolysaccharide from Lactiplantibacillus plantarum H6 improves cholesterol metabolism via Muribaculum-mediated activation of the enterohepatic FXR-FGF15 axis.
Reactive Carbonyl Species Mediate Isothiocyanate Signaling Pathway in Arabidopsis thaliana Guard Cells.
Amylin and the renin-angiotensin system: risk or opportunity in amylin-based therapy?
Amylin and the renin-angiotensin system: risk or opportunity in amylin-based therapy?
Increased levels of systemic iron content in adult-onset interleukin-6 knockout mice.