Immune Peptides

Thymalfasin

Thymosin Alpha-1 (trade name Zadaxin / Thymalfasin) is a 28 amino acid thymic peptide naturally produced by the thymus gland. It is approved in more than 35 countries for hepatitis B and C treatment, and as an immune adjuvant for vaccines and certain cancers. Research has focused on T-cell maturation, dendritic cell activation, NK cell function, and cytokine modulation of innate and adaptive immune responses. Research dosing is typically 1.6–3.2mg subcutaneously twice weekly in 4–8 week cycles. Researchers track WBC, CD4/CD8 ratio, NK cells, and full immunoglobulin panels (IgG, IgA, IgM) as the primary response biomarkers.

Cathelicidin

LL-37 is the only human cathelicidin antimicrobial peptide, produced by immune cells, epithelial cells, and skin. It plays a critical role in the innate immune defense against bacteria, viruses, and fungi, and is studied for chronic infections and wound healing.

VIP

Vasoactive Intestinal Peptide (VIP) is a 28-amino acid neuropeptide with potent anti-inflammatory and immunomodulatory properties. It is studied for chronic inflammatory response syndrome (CIRS), pulmonary hypertension, and mold-related illness, and is used by functional medicine practitioners for biotoxin illness protocols.

Facteur Thymique Serique

Thymulin is a zinc-dependent nonapeptide secreted by the thymus gland that plays a critical role in T-cell differentiation and immune regulation. Circulating thymulin levels decline with age, correlating with thymic involution and age-related immunosenescence.

GSH

Glutathione is a tripeptide (gamma-L-glutamyl-L-cysteinyl-glycine) that serves as the principal intracellular antioxidant in mammalian cells. Researchers study it for oxidative stress defense, xenobiotic detoxification, immune cell function, and redox signaling.