Thymalin Overview
Mechanism of Action
Thymalin is a polypeptide thymus extract containing bioregulatory peptides for immune maturation and function. It promotes T-lymphocyte differentiation, restores T-cell CD4/CD8 ratio, enhances NK cell activity, and modulates cytokine production. Aims to restore thymic function as the thymus involutes with age.
Short peptide half-life; immune effects persist days
Timing
Morning
Injection Site
Subcutaneous or intramuscular
Food
No restrictions
Common Stacks
- Thymosin Alpha-1 — Complementary immune modulation
- Epithalon — Khavinson anti-aging combination
Thymalin Dosing Protocol
Standard Protocol
10 days5–10 mg SQ daily
10-day cycles, typically 2x/year (spring and fall).
Immune Restoration
10 days10 mg SQ daily
For acute immune support.
Thymalin Expected Timeline
Day 1–5
T-cell stimulation; immune activation
Day 5–10
Improved immune markers; enhanced NK activity
Post-cycle
Sustained immune benefits for weeks to months
Thymalin Side Effects
Mild injection site reactions
Very well tolerated
Rare allergic reactions
Thymalin Research Studies
Thymalin as a geroprotector in prevention of accelerated aging
Khavinson VK, Morozov VG — Bull Exp Biol Med (2003)
Long-term study showing thymalin improved immune function, reduced morbidity, and extended lifespan in elderly patients over 6 years of cyclical use.
PubMed: 12937682Thymalin FAQ
How is Thymalin different from Thymosin Alpha-1?
TA1 is a single defined 28-amino-acid peptide with specific mechanism (TLR activation). Thymalin is a polypeptide extract with multiple thymic factors for broader spectrum support.
Why 10-day cycles?
Based on decades of Khavinson research showing short courses produce immune benefits persisting 4–6 months before next cycle needed.