Immune ModulationUnregulated/Therapeutic
Thymalin
Synonyms: Thymic Polypeptide Complex, Bovine Thymus Extract
Sequence: Thymic polypeptide complex (native peptide mixture)
History & Discovery Timeline
Thymalin was developed in the 1970s by Professor Vladimir Khavinson to isolate the immunorestorative peptides naturally secreted by the thymus gland.
What it is: It is a synthetic peptide preparation modeled after natural thymus gland extracts. It belongs to the Tissue Repair/Immune category.
Proposed Mechanisms & Research Findings: It stimulates T-lymphocyte differentiation and restores T-cell counts, balancing helper/suppressor T-cell ratios and enhancing cellular immunity.
Regulatory & Safety Status: It is not FDA approved. In Russia, it is approved for clinical use to treat immunodeficiencies. Gray-market online vendors sell unverified preparations.
Athletic & Anti-Doping Status: It is not prohibited by WADA, as its primary actions are immunomodulatory rather than anabolic.
Understanding Thymalin Key Facts
Primary Target System:IMMUNE
Residue Count / Length:1 Amino Acids
Primary Action & Category:Thymic Endogenous Bioregulator (Immune Modulation)
Primary Receptors:T-Lymphocyte Surface Receptors
Figure 1: Detailed molecular mechanism pathways of Thymalin (click to enlarge).