What is the half-life of Thymalin?
Thymalin has a reported half life of Short, minutes in plasma; biological effect persists days, given intramuscular (clinical) or subcutaneous (research use). That is why it is typically dosed daily for 10 days, then off. A shorter half life means more frequent dosing to keep blood levels steady, a longer one lets you space doses further apart.
Quick facts
- Half-life: Short, minutes in plasma; biological effect persists days
- Route: Intramuscular (clinical) or subcutaneous (research use)
- Typical schedule: Daily for 10 days, then off
- Cycle length: 10-day course, repeated 2-3x per year
References
- Peptides of pineal gland and thymus prolong human life — Khavinson VKh, Morozov VG, Neuro Endocrinol Lett, 2003
- The Influence of KE and EW Dipeptides in the Composition of the Thymalin Drug on Gene Expression and Protein Synthesis Involved in the Pathogenesis of COVID-19 — Linkova N, et al., Int J Mol Sci, 2023
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.