Thymogen is the dipeptide Glu-Trp. Khavinson and Morozov's group isolated it from the calf thymus extract Thymalin by reverse-phase HPLC, then made it synthetically. That is a cleaner origin story than most of the bioregulator family has.
Thymogen Prices
3 vendors · 0 with an issuer-verified COA · lowest 10mg from $59.49 · checked
Where to buy Thymogen: 3 vendors compared
| Vendor | Price | Actions |
|---|---|---|
| $59.49 | Buy Thymogen from SomaChems | |
| $71.97 | Buy Thymogen from BioLongevity Labs | |
| $113.05 | Buy Thymogen from Paramount Peptides |
Tracked every day
Thymogen listing prices, tracked daily
The five cheapest in-stock package prices for Thymogen on each collected day, and the vendors that most often held those places.
No collected listings for this compound yet.
Current market data
Thymogen Price Report
A current summary of public listings after the price comparison above. Shipping and tax are not included.
The lowest current 10mg cost for Thymogen is $59.49 from SomaChems. The median across vendors is $71.97.
- Lowest 10mg cost
- $59.49SomaChems
- Median 10mg cost
- $71.97One normalized offer per vendor
- Lowest package total
- $59.49SomaChems · package size may differ
- Public COA coverage
- 100%3 of 3 vendors
What the market shows
PeptidePrices found 3 in-stock listings from 3 vendors, checked through Oct 8, 2026. The lowest 10mg cost is 17% below the vendor median of $71.97; 1 vendors (33%) fall below that median. 3 of 3 vendors (100%) publish public COA evidence.
A public COA link shows that a vendor publishes testing data. It does not prove that every listed vial has a matching current report. Match the product, strength, batch, and lot before relying on a report.
How this report is calculated
The headline and median use each vendor's lowest whole-package checkout cost to obtain at least 10mg. Smaller packages are multiplied until the target is met, while larger packages retain their full checkout price. The lowest package total is shown only as secondary context because package sizes differ. Known public coupon discounts are applied. Shipping, tax, and unverified promotions are excluded.
Research context
What is Thymogen? Research, safety, and status
Thymogen is two amino acids, glutamic acid and tryptophan, joined by a normal peptide bond. At 333 Da it is tiny, and it is hydrophilic. A 2007 Australian study described it as poorly permeable across gut cells and "not orally available" without chemical modification. It is also a preferred substrate for aminopeptidase W, a kidney membrane enzyme that cuts it into its two amino acids.
The reported immune effects include T-cell differentiation, changes in lymphocyte cyclic nucleotides, and stimulation of neutrophil chemotaxis and phagocytosis. Gill's US group found that its antitumor effect in mice depended on natural killer cells: it disappeared in mice lacking perforin or functional NK granules, and was weaker without IL-12. It showed no direct toxicity to tumor cell lines.
Key research takeaways
It is a real drug in Russia, sold for infections and immune support around surgery, radiation and chemotherapy. Most of the Russian clinical literature behind it is from the 1990s, small, and published in Russian.
It is also the best-tested peptide in this family by independent researchers, because a US company ran it as IM862. A 202-patient double-blind phase III in AIDS-related Kaposi's sarcoma found it no better than placebo, with faster progression on the drug. A 71-patient prostate cancer trial and a 25-patient kidney cancer trial were also negative.
Mirror-image versions of the same dipeptide do the opposite. D-amino-acid forms suppress blood-forming cells, and the developers turned one, written D-Glu(D-Trp), into the immunosuppressant Thymodepressin. A standard LC-MS check cannot tell these isomers apart.
Thymogen at a glance
PeptidePrices safety rating
6/10 · Not FDA-approved (registered as a drug in Russia)
Mechanism
Immunomodulatory dipeptide originally identified in the thymus extract Thymalin; cell and animal studies report effects on immune signalling and antioxidant activity.
Research areas
Immune-system bioregulator research. Registered as a medicine in Russia; not approved in the US, and Western clinical evidence is limited.
Regulatory / research status
Research / preclinical only
Half-life
Not established in direct human pharmacokinetic studies.
Storage
Lyophilized vial: store at -20°C long-term or 2-8°C short-term, protected from light.
Reported side effects
Human safety data is sparse. The available evidence is mainly preclinical and small Russian studies from one research group, and it does not establish clinical efficacy.
Russian bioregulator; short peptide; registered in Russia; limited but clean data. Safety ratings summarize published clinical data, adverse-event reporting, and regulatory status. How PeptidePrices rates evidence. Research information only, not medical advice.
Study highlights
- Thymogen is the dipeptide Glu-Trp. Khavinson and Morozov's group isolated it from the calf thymus extract Thymalin by reverse-phase HPLC, then made it synthetically. That is a cleaner origin story than most of the bioregulator family has.
- It is a real drug in Russia, sold for infections and immune support around surgery, radiation and chemotherapy. Most of the Russian clinical literature behind it is from the 1990s, small, and published in Russian.
- It is also the best-tested peptide in this family by independent researchers, because a US company ran it as IM862. A 202-patient double-blind phase III in AIDS-related Kaposi's sarcoma found it no better than placebo, with faster progression on the drug. A 71-patient prostate cancer trial and a 25-patient kidney cancer trial were also negative.
- Mirror-image versions of the same dipeptide do the opposite. D-amino-acid forms suppress blood-forming cells, and the developers turned one, written D-Glu(D-Trp), into the immunosuppressant Thymodepressin. A standard LC-MS check cannot tell these isomers apart.
Selected references
- Oral absorption enhancement of dipeptide L-Glu-L-Trp-OH by lipid and glycosyl conjugation · PubMed, 2008
- Natural and synthetic thymic peptides as therapeutics for immune dysfunction · PubMed, 1997
- Тимоген (Thymogen) nasal spray, Cytomed; prescribing information as reproduced on medi.ru, registration Р N002408/01-040210 · medi.ru
- RLS Encyclopedia (rlsnet.ru) · rlsnet.ru
- Angiogenesis inhibitor IM862 is ineffective against AIDS-Kaposi's sarcoma in a phase III trial, but demonstrates sustained, potent effect of highly active antiretroviral therapy · PubMed, 2005
- Employing the treatment-free interval of intermittent androgen ablation to screen candidate prostate cancer therapies · PubMed, 2007
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