← All peptides
Longevity & Anti-aging
Immune
Research Chemical

Testagen

Also known as: Testagen

Testagen is a short synthetic bioregulator peptide from the Khavinson family, studied for effects on the thymus and immune regulation. It is researched for supporting immune balance and healthy aging.

Last updated

Mechanism of Action

Testagen is a Khavinson-type short peptide bioregulator proposed to act as an epigenetic signal that interacts with regulatory regions of DNA to modulate gene expression in target tissues. It is studied for influencing thymic and lymphoid cell differentiation, helping normalize immune and endocrine function that declines with age. Like other peptide bioregulators, it is thought to support tissue-specific homeostasis rather than acting as a hormone or receptor agonist.

Half-life
Short; small peptides are typically cleared within hours
Administration Routes
subcutaneous
Research Status
Research Chemical

Reported Benefits

  • Supports thymic and immune cell regulation
  • May help restore age-related immune balance
  • Studied within the bioregulator approach to healthy aging
  • Investigated for endocrine and reproductive tissue support
  • Generally well tolerated in reported research settings

Potential Side Effects

  • Limited human clinical data
  • Possible injection-site irritation
  • Mild transient fatigue reported anecdotally
  • Unknown long-term effects

Common Dosing

Reported research and bioregulator protocols use low-microgram-to-milligram daily amounts over short courses. For research use only and not personal medical advice.

The dosing information above is aggregated from research literature and anecdotal community reports for educational purposes only. It is not a recommendation, prescription, or medical advice. Peptides are sold as research chemicals only and are not intended for human use.

Contraindications

  • Pregnancy or breastfeeding
  • Active autoimmune disease without oversight
  • Known hypersensitivity to peptide bioregulators
  • Effect of peptides Lys-Glu-Asp-Gly and Ala-Glu-Asp-Gly on the morphology of the thymus in hypophysectomized young and old birds

    2013

    View
  • Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA

    2011

    View
  • [Effects of hypophyseal Lys-Glu-Asp-Gly and Ala-Glu-Asp-Gly synthetic peptides on immunity, hemostasis, morphology and functions of the thyroid gland in neonatally hypophysectomized chicken and one-year-old birds]

    2010

    View

Testagen is one of the Khavinson short peptide bioregulators, a class of tissue-specific peptides studied in Russia for modulating gene expression and supporting healthy aging.

No. Testagen is an experimental research peptide. Much of its supporting data comes from bioregulator research rather than large controlled clinical trials, and it is not an approved therapeutic.

PeptideChat is for educational and research purposes only. Nothing on this site constitutes medical advice. Peptides are sold as research chemicals only and are not intended for human use. These statements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. PeptideChat is an independent educational resource — not a pharmacy, compounding, or 503A/503B outsourcing facility — and does not sell products or provide medical advice.