What does Thymogen do? Benefits and evidence

Thymogen is a two-amino-acid peptide used as an immune medicine in Russia. Its IM862 form did not beat placebo in cancer trials; older infection and recovery reports often lack dose or safety details. Small oral gel studies of thinning stomach lining often reuse participants. Long-term safety in healthy users remains unclear.

• A phase 3 trial of nasal IM862 in AIDS-related Kaposi sarcoma found no benefit; that failed cancer regimen does not establish a dose for immune support. (Studied in a trial)
• In Russia, doctors use it for patients with weak immunity during infection, wound or surgical care; this is not a US-approved use. (Studied in a trial)
• In a small blinded trial, people's wounds healed faster. (Studied in a trial)
• In studies of a gel taken by mouth for a thinning stomach lining, biopsy and inflammation markers improved; what that means for symptoms is unclear. (Studied in a trial)

Uses in the sources

• Russian medical use for immune deficits alongside infection, wound or surgical care. This is not an FDA/EMA indication. (Clinician-published) (source)
• Studied as an oral gel after H. pylori therapy for stomach-lining atrophy; tissue-marker findings need independent confirmation. (Studied in a trial) (source)
• Studied as IM862 for cancer. Controlled Kaposi and prostate trials did not establish benefit. (Studied in a trial) (source)
• Used in self-experiments aimed at immune aging; no controlled human lifespan benefit established. (Reported by users) (source)