What are peptide bioregulators?
Peptide bioregulators are very short lab-made peptides, mostly two to four amino acids long, developed by Vladimir Khavinson and colleagues at the Saint Petersburg Institute of Bioregulation and Gerontology. Each one is said to support a specific organ, like the thymus, brain, liver or blood vessels.
The family grew from organ extracts used in the Soviet Union, like thymalin from the thymus.
Peptide bioregulators compared
| Bioregulator | Sequence or type | Organ it is said to target | Evidence |
|---|---|---|---|
| Epitalon | Ala-Glu-Asp-Gly | Pineal gland, aging | Cell and animal studies; small Russian human studies |
| Thymalin | Thymus peptide mixture | Immune system | Used as a medicine in Russia; small Russian studies |
| Pinealon | Glu-Asp-Arg | Brain | Cell and animal studies |
| Vilon | Lys-Glu | Thymus, immune system | Cell and animal studies |
| Vesugen | Lys-Glu-Asp | Blood vessels | Cell studies |
| Livagen | Lys-Glu-Asp-Ala | Liver | Cell studies |
| Bronchogen | Ala-Glu-Asp-Leu | Lungs and airways | Cell studies |
| Cortagen | Short synthetic peptide | Brain cortex | Animal studies |
| Endoluten | Marketed pineal bioregulator product | Pineal gland | No peer-reviewed human trials found |
How are peptide bioregulators supposed to work?
Their developers propose that these tiny peptides get inside cells, even into the nucleus, and change which genes are active in a particular tissue. In this view, each peptide restores the normal function of an aging organ.
This is unlike most medicines, which act on receptors on the cell surface. The gene-switching idea comes almost entirely from the same research group and hasn’t been confirmed by independent labs.
What does the research on bioregulators show?
Most of the evidence is cell and animal research from a small number of Russian groups. The longest human studies involve thymalin and epitalon in elderly people in Saint Petersburg, which reported better immune markers and lower death rates, but they were small and haven’t been repeated elsewhere.
For Vilon, Vesugen, Livagen, Bronchogen and Cortagen, there are no rigorous human trials. Endoluten is sold as a product rather than studied as a defined compound in peer-reviewed trials.
Are peptide bioregulators safe?
Their safety in people hasn’t been properly tested. Few side effects are reported, but small studies can miss problems, and products sold online, often as capsules, aren’t checked for purity or content.
Are peptide bioregulators legal?
None is approved as a medicine by the FDA or the European Medicines Agency. Thymalin is used as a medicine in Russia, and some others are sold there and online as supplement-style capsules.