Thymogen FAQ: common questions answered

A Russian peptide used for immune problems, with negative cancer trials.

Also called: Timogen, Thymagen, L-Glu-L-Trp, Glu-Trp, EW, Alpha-glutamyl-tryptophan, Oglufanide, IM862, IM-862.

Khavinson bioregulator peptides · Synthetic L-glutamyl-L-tryptophan immune-modulating dipeptide.

  • Is Thymogen FDA-approved? No FDA-approved product or label identified. Foreign registration does not authorize US marketing or compounding.
  • How do people take it? Under the skin, twice daily on days 1–10 of each month. 10 dosing days each month; no dose escalation reported. 9 months. Source: reported by users, not an established dose.
  • What's the difference between Thymogen and Epitalon? Thymogen: a Russian peptide used for immune problems, with negative cancer trials. Epitalon: a peptide with telomerase effects in cells, but no proof that people live longer. Why people pair them: combined in thymus-aging and recovery self-experiments.
  • Can I take it with Epitalon? Combined in thymus-aging and recovery self-experiments. One high-dose combination had worsening CT findings; causation is unknown. Source: reported by users. Ask a doctor before combining anything.
  • Is it banned in sport? It is unclear (WADA 2026). Not named in the 2026 list. S0 concerns substances without any governmental human approval; Thymogen has Russian registration. No specific ruling verified.
  • How long does a mixed vial last? Injection ampoules are ready-made; no validated home mixed-vial shelf life was found. Oral studies used freshly prepared gel.

Related to Thymogen

Sources

Sources checked: 2026-10-18.

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