Longevity Category
Thymagen
THE IMMUNE RESTORER
A-3 Peptide; Thymic Bioregulator
Thymagen is a thymus-derived bioregulator peptide that helps restore immune balance. It promotes T-cell differentiation, modulates inflammatory responses, and enhances antioxidant defenses. It's used to restore immune competence after chronic infections, stress, or aging, helping to reverse the immune decline (immunosenescence) that occurs as we get older.
Thymagen Evidence Snapshot
How these guides are reviewed- Regulatory status
- Not FDA approved · research use only
- Dosing guidance
- Reviewed by our clinical team
- Linked evidence
- 2 research sources
- Content updated
- May 8, 2026
Dose and schedule recommendations shown below come from The Peptide App Clinical Team. Research links are provided so readers can inspect the supporting evidence directly. Review the sources.
Quick Answers About Thymagen
Is Thymagen FDA approved?
No. This profile records Thymagen as not FDA approved and for research use only.
More context
Review the regulatory and source details on this page for the current context.
What dose does The Peptide App Clinical Team recommend for Thymagen?
Dose: 2 mg subcutaneously daily.
More context
Schedule: daily. Cycle: 4 weeks on, 8 weeks off (2-3 cycles per year). This is clinical-team guidance for reference and does not replace individualized instructions from a licensed clinician.
What research supports this Thymagen guide?
This guide links to 2 curated or current research sources.
More context
Open the research section to inspect the source titles, publication details, study types, and available abstracts directly.
Review the Thymagen research sourcesStudied Effects & Mechanisms
T-Cell Expansion
Promotes CD34+ progenitor cell differentiation
Cytokine Balance
Reduces pro-inflammatory while increasing IL-10
Thymic Restoration
Restores thymic epithelial cell markers (FOXN1)
Nrf2 Activation
Enhances antioxidant enzymes like SOD2
Clinical & Research Context
Those with weakened immune function · People recovering from chronic infections · Anyone experiencing immunosenescence · Those under chronic stress · People wanting to optimize immune function
Research-Market Price Snapshot
A compact market signal for this profile. The dedicated pricing page owns vendor, vial-size, and price-per-mg comparisons.
Updated Jul 16, 2026
- Vendors
- 7
- Listings
- 7
- Observed range
- $50–$80
Thymagen Research
Live PubMed intelligence from the research crawler
[Effect of thymagen, thymalin and vilosen on the cAMP and cGMP levels and phosphodiesterase activity in spleen lymphocytes during sensitization and anaphylactic shock].
Ukrainskii biokhimicheskii zhurnal (1978) · Jan 1, 1991
It is established that the effect of thymus-derived species is connected with the cyclic nucleotide system. The action of thymus-derived immunocorrectors (thymalin, thymagen, vilosen) on catabolic processes of cyclic nucleotides has been observed under conditions of anaphylaxy and sensibilization. They show that sensibilization of the animal is bound up with a decrease of the cAMP/cGMP ratio. Anaphylaxis induces levelling of the cAMP/cGMP ratio up to the reference level. So, activity of enzymes of cyclic nucleotide catabolism grows due to the influence of thymogen, thymalin and vilosen in lymphocytes of sensibilized guinea pigs and tends to an increase in lymphocytes of anaphylaxis-treated animals.
Research references
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