For research and educational purposes only · Not medical advice · Consult a qualified physician before any human use
Zinc thymulin (Zn-FTS) is an endogenous nonapeptide hormone produced by thymic epithelial cells, first characterized by Bach and Dardenne in 1977. It requires zinc binding in a 1:1 ratio for biological activity: without zinc, the peptide is inert. Thymulin's established role is in T-cell differentiation and immune modulation, but its current commercial interest is driven almost entirely by hair loss applications. Meier et al. (2012, Journal of Investigative Dermatology) showed thymulin extends anagen phase in human hair follicle organ culture. A single open-label human trial (Vickers 2017, n=18, 4 to 10 months) reported significant hair growth improvement with topical zinc thymulin spray in androgenetic alopecia. The evidence is promising but extremely preliminary: one small uncontrolled study does not constitute proof of efficacy. Thymulin is distinct from Thymosin Alpha-1 and Thymalin, two other thymic peptides already profiled in this series.
The complete Zinc Thymulin profile includes all use cases with full evidence reviews, mechanism of action deep dive, safety analysis, evidence table, dosing guidance, and stack compatibility data.
For research and educational purposes only · Not medical advice · Consult a qualified physician before any human use