ThymalinImmuneSafety Rating 6/10

Primary research areaImmune deficiency

Research-literature reference data, NOT patient instructions. Not for human use. Consult a licensed clinician for any human application.

Research dose range10 mg SC daily for 10 days per cycle, repeated 1–2x/year. Often combined with Epithalon in Russian longevity protocols.
AdministrationVaries
Safety6/10 · Approved in Russia
NCAA D1Not listed

Price Comparison

Compare vendors · per 10mg

6 vendors competing

VendorPrice$ / mgUpdated
Polar PeptidesBest $/mgCOA on request$43.19$4.32Apr 17, 2026Buy →
LeoLab RxCOA ✓ · 3P$55.00$5.50Apr 6, 2026Buy →
Core PeptidesCOA ✓ · 3P$138.00$5.52Apr 16, 2026Buy →
PeptiraCOA ✓ · 3P$59.00$5.90May 14, 2026Buy →
Behemoth LabzCOA ✓ · 3P$120.97$6.05May 14, 2026Buy →

Overview

About Thymalin

Mechanism of action

Polypeptide complex from bovine thymus; restores T-cell counts and function; modulates B-cell activity; normalizes cytokine production; immunomodulatory and anti-aging effects.

Safety profile

Very well-tolerated. Injection site reactions; rare hypersensitivity. Decades of Russian clinical use showing safety. · Russian approval; immunomodulatory; used in aging research; no major adverse signals

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