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Atomik Labz
122 products · 249 listings
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Testagen prices
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2suppliers represented
2source-linked listings
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Suppliers with Testagen listings
2 profiles
Solution Peptides
153 products · 275 listings
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FROM PEPTIDES CALCULATOR
About Testagen
Source profile reviewed 2026-10-01 · Imported 2026-10-22. Read the full compound profile
Testagen is the name used by Vladimir Khavinson's St Petersburg Institute of Bioregulation and Gerontology for the tetrapeptide Lys-Glu-Asp-Gly (KEDG), sold online as a testicular bioregulator. The handful of indexed papers describe it as synthesized from the amino acid composition of anterior pituitary peptide complexes and test it alongside Ala-Glu-Asp-Gly (Epitalon) in chickens whose pituitary glands were removed, where 40 days of injections raised thyrotropin and thyroid hormone levels and restored thyroid and thymus structure. No study of the synthetic peptide in humans has been published in English, nothing in PubMed links the sequence to testosterone or testicular function, and the compound is not approved as a drug anywhere; in Russia a product called Testagen is registered as a dietary supplement for men. The dosing figures that circulate online are copied from the Russian supplement course pattern rather than from any dose-finding work.
- Formula
- C17 H29 N5 O9
- Molar mass
- 447.4 g/mol
- Amino acids
- 4
Research evidence described in the source
Research on Testagen
The Thyroid Gland and its Importance The thyroid gland, a vital component of the endocrine system, is central to various bodily functions such as metabolism, growth, and reproductive processes.…
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- Individual claims and source links have not yet completed editorial verification.
- Evidence level, applicable study model, formulation, route and population remain unassigned.
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Background is reproduced from Peptides Calculator with attribution. The source describes compound-level research. It does not evaluate the identity, quality or suitability of a listed supplier’s product or batch.