Thymalin
Community reportsA calf-thymus extract with decades of clinical reporting — and not one study you can look up in a registry.
What it is
Thymalin is a drug made from calf thymus glands, developed in Leningrad and registered in the USSR in 1982. Unlike a single defined molecule, it is a mixture of many peptides and has no single structure. It is promoted mainly for immune support and longevity.
How it works
The extract is reported to calm inflammatory signals and shift markers on immune cells. In lab work it lowered inflammatory cytokines in human blood cells and changed surface markers on stem cells. Most of this has been measured in cells and rodents rather than in people.
What people report
- ✦Decades of published clinical reporting, which is unusual in this market
- ✦Large reported benefits in the developers' own cohorts
- ✦Carries a national registration certificate and a pharmacopoeial history
- ✦Independent groups have measured real effects on immune markers in cells and rats
Typical use
No registered or standardized protocol. Reported as short immune-support courses in the older literature.
Dosing reference
No modern reference dose. Historical use was as an injectable extract; concentrations vary. Verify against primary sources.
Reference only — not a recommendation. Verify via primary sources.
Watch for
The immune numbers move, but the longevity claim rests on a single old study no one outside the inventors' institutes has repeated. Missing basics include any pharmacokinetic study, dose-ranging, or a published composition assay of the marketed material.
Educational content — not medical advice.