Compound · thymalin
T3Peptide

Thymalin

Polypeptide extract from the thymus gland. Restores T-cell differentiation and function, modulates cytokine profiles, and normalizes immune system balance. Part of the Khavinson bioregulator peptide framework. In elderly cohorts, associated with reduced mortality in a 6-year follow-up study.

Half-life
Poorly characterized
Bioavailability
Intramuscular injection
Route
intramuscular
Evidence tier
T3 — Community / emerging
Optimization pillars
anti-aging
References
1 peer-reviewed
Dose ranges

Three tiers ordered by aggressiveness. Tier chips on every OPTIMIZE intervention let you filter the catalog by your evidence tolerance.

conservative
5–10 mg/day for 5-10 days
Immune support cycle
moderate
10 mg/day for 10 days
Standard Khavinson protocol
aggressive
10–20 mg/day for 10 days
Intensive immune restoration
Monitoring
  • wbc
Contraindications
  • pregnancy
  • autoimmune-disease
References
  • PMID:12937225Peptide bioregulation of aging: results of a 15-year follow-upBull Exp Biol Med, 2003
Notes

Thymalin sits in the same Khavinson bioregulator framework as epithalon. The 6-year mortality data from the elderly cohort study is the most provocative finding — reduced mortality in a 266-person study with a thymalin + epithalon combination. The study is methodologically limited but the direction of effect is notable. The thymus involutes with age. T-cell production declines. Thymalin attempts to reverse that trajectory. Whether it succeeds at scale remains an open question that Western clinical infrastructure has not addressed.

This is not medical advice

Discuss with a licensed clinician before starting, stopping, or changing any compound. This page documents what the research literature describes — it is not a prescription.

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