Peptide library

Thymalin

Limited human dataImmune

A mix of short peptides from calf thymus, developed in the Soviet Union (Khavinson) as an immune regulator.

Approved in Russia (thymus extract); not approved elsewhere.

Used for

  • Immune support in older adults
  • Recovery after infection or chemo

How it works

Thought to restore T-cell production and thymus signaling; cell studies suggest it promotes blood stem cell maturation.

What the research shows

  • Most data are Russian clinical reports and lab studies from one research group; few controlled trials in English.

Dosing

Dosing isn’t listed on the public site. In the app, each published option is shown with its source (a drug label, a clinical guideline, a trial or community reports) and can be turned into a protocol you review.

Work out the units to draw for your vial →

Side effects

  • Few reported

Cautions

  • Research-chemical vials have no quality control: purity, dose and sterility vary. Third-party testing helps but is no guarantee.

Storage

Unmixed powder: freezer or fridge, away from light.

Once mixed with bacteriostatic water: fridge; the common rule is to use it within 28 days.

There is no label or published stability data for this one, so treat these as habits, not limits.

Reference only, not medical advice. Written for this app from the cited research. Doses marked community-reported are not from trials.