Thymogen
EW Dipeptide · Thymus Immune Bioregulator
Thymogen (EW dipeptide) is a Khavinson bioregulator consisting of glutamic acid and tryptophan, originally isolated from calf thymus extracts (Thymalin) in the late 1980s. Developed by Professor Vladimir Khavinson, it has been registered in Russia since 1990 in multiple forms including injectable solution, nasal spray, and topical cream. Thymogen modulates both humoral and cellular immunity, activates T-cell differentiation, and has demonstrated geroprotective (anti-aging) and antitumor activities in research studies.
Overview
Thymogen (EW dipeptide) is a Khavinson bioregulator consisting of glutamic acid and tryptophan, originally isolated from calf thymus extracts (Thymalin) in the late 1980s. Developed by Professor Vladimir Khavinson, it has been registered in Russia since 1990 in multiple forms including injectable solution, nasal spray, and topical cream. Thymogen modulates both humoral and cellular immunity, activates T-cell differentiation, and has demonstrated geroprotective (anti-aging) and antitumor activities in research studies.
Thymogen works through multiple immunomodulatory mechanisms: (1) activates T-cell differentiation and T-cell recognition of peptide-MHC complexes, (2) induces changes in intracellular cyclic nucleotide composition, (3) activates neutrophilic chemotaxis and phagocytosis, (4) normalizes T-lymphocyte concentrations and ratios (CD3+, CD4+, CD8+), (5) stimulates production of immunoglobulins (IgA, IgG, IgE, IgM), and (6) enhances lymphocyte differentiation receptor expression. Research suggests Thymogen may interact specifically with the AACG DNA sequence, affecting gene expression. The peptide is rapidly distributed to thymus, lymph nodes, liver, adrenals, and kidneys.
Research indications
What the compound has been studied for, grouped by body system. Effect size is the reported magnitude where it was measured — not a recommendation.
Modulates both humoral and cellular immune responses for balanced immunity.
Activates T-cell differentiation and normalizes CD3+, CD4+, CD8+ populations.
Stimulates production of IgA, IgG, IgE, and IgM antibodies.
Studied for improving surgical outcomes through immune support.
Demonstrated geroprotector activity in aging research.
In combination with pineal peptides, showed significant mean lifespan increases in animal models.
Inhibits spontaneous carcinogenesis and shows robust antitumor effects in research.
Studied in Russia for regulating immune response in oncology patients.
Research interest in cardiovascular applications.
Investigated for metabolic and immune aspects of diabetes.
A large effect in a weak study and a small effect in a strong one are different things. Effect size is never evidence of use in people.
- Class
- Dipeptide bioregulator
- Chain length
- 2 residues
- Molecular weight
- 333 Da
- Typical dose
- 10-20mg daily during cycle
- Frequency
- Daily for 10-20 days, then break
- Cycle length
- 10-20 day cycles (bioregulator protocol)
- Storage
- Injectable: 2-8°C. Nasal/topical: per product directions. Powder: room temp
Molecular data
- Type
- Dipeptide bioregulator
- Molecular weight
- 333 Da
- Chain length
- 2 residues
Dosing reference
Doses reported in the literature and by suppliers. These are a record of what has been used in research — reference, never instruction.
| Context | Route | Amount | Frequency |
|---|---|---|---|
| Standard immune support | IM or SubQ | 10-20 mg | Daily for 10-20 days |
| Maintenance protocol | IM or SubQ | 20 mg | 2-3 cycles per year |
| Nasal administration | Intranasal spray | As per product directions | Daily during cycle |
| Topical use | Topical cream | Apply thin layer | As directed |
Interactions
Combination showed significant lifespan increases and robust antitumor activity in research.
Thymogen was isolated from Thymalin; they share complementary thymus-supporting mechanisms.
Both are Khavinson thymus dipeptides; often combined in comprehensive immune protocols.
Different thymic peptides with complementary immune mechanisms.
Different structures and mechanisms; can be used together.
Quality checklist
- ✓White to off-white lyophilized powder
- ✓Clear solution after reconstitution
- ✓Certificate of analysis with purity verification
- ✓Proper packaging and labeling
- !Unknown source or unverified purity
- ×Discolored powder
- ×Cloudy or particulate solution
- ×Damaged packaging or broken seal
What to expect
Safety
- Generally well-tolerated
- Injection site reactions (mild)
- Minimal side effects reported in clinical use
- Signs of allergic reaction
- Unusual immune symptoms
- Severe injection site reactions
- Active autoimmune diseases (use with caution)
- Organ transplant recipients on immunosuppression
- Known hypersensitivity to component amino acids
- Pregnancy or breastfeeding
FAQ
What's the difference between Thymogen (EW dipeptide) and Thymalin (extract mixture)?
Thymogen is a single, pure dipeptide (Glu-Trp) isolated from Thymalin extracts. Thymalin is the complete mixture containing multiple peptides (KE, EW, EDP). Thymogen offers standardized dosing and stability, while Thymalin provides broader synergistic effects - both are compatible and sometimes used together.
Can Thymogen be taken orally or must it be injected?
Thymogen is available in multiple forms - oral capsules, injectable solution, nasal spray, and topical cream (all registered in Russia). The dipeptide's small size allows reasonable oral bioavailability via capsules, making it more convenient than injectable-only bioregulators.
How do Thymogen and Epitalon compare for anti-aging and lifespan extension?
Both are Khavinson anti-aging peptides with different targets. Thymogen focuses on immune rejuvenation and tumor suppression, while Epitalon targets pineal/endocrine aging. Combined use showed robust lifespan increases and antitumor activity in research models - they're synergistic rather than redundant.
Is Thymogen banned in sports like other immune peptides?
Thymogen is not explicitly listed as banned by WADA since it's not widely used in sports, but as a performance-enhancing immune modulator, it would likely be prohibited if tested. Check with your sport's governing body, but assume risk if subject to anti-doping testing.
References
- 1Natural and synthetic thymic peptides as therapeutics for immune dysfunctionJournal of Immunopharmacology · 1997
Review of thymic peptide therapeutics including Thymogen for immune modulation.
reviewPubMed 9637345 ↗ - 2Immunomodulatory synthetic dipeptide L-Glu-L-Trp slows down aging and inhibits spontaneous carcinogenesis in ratsKhavinson VKh, Morozov VG · Biogerontology · 2001
Thymogen demonstrated geroprotector activity and inhibited spontaneous carcinogenesis in aging rat models.
animalPubMed 11707921 ↗