What Is Epitalon?

Epitalon is a peptide, which means a short chain of amino acids. Most peptides in the news have dozens of links. Epitalon has four, in this order: alanine, glutamic acid, aspartic acid and glycine. Scientists write it as Ala-Glu-Asp-Gly, or simply AEDG.

Where the Name Comes From

The name points to the epithalamus, the part of the brain that holds the pineal gland. Epitalon was designed after researchers analysed the amino acids in epithalamin, an extract made from the pineal glands of cattle. The idea was to recreate the active part of that extract as a pure, simple molecule that could be made in a laboratory.

How It Is Thought to Work

• The pineal gland: in old rats and monkeys, Epitalon was reported to raise evening melatonin, the hormone that helps set the body clock.
• Telomerase: in human cells grown in the lab, it was reported to switch on the enzyme that lengthens telomeres.
• Genes: because it is so small, its developers believe it can enter the cell nucleus and influence which genes are read.
• Oxidative stress: several animal studies describe less damage from harmful oxygen molecules.

Why Telomeres Matter

Telomeres are repeated stretches of DNA at the ends of each chromosome, a bit like the plastic tips on shoelaces. They get a little shorter each time a cell divides, and very short telomeres push cells into retirement. Telomerase can rebuild them. Most adult body cells keep it switched off, while many cancer cells switch it back on, which is why longer telomeres are not automatically good news.

What Is Still Unclear

Nobody has shown how much Epitalon survives in the human body, how long it lasts or which tissues it reaches. Its exact target in the cell is also uncertain. Much of the story is based on results that independent laboratories have not yet repeated.

In Short

• Epitalon is a lab-made chain of four amino acids, Ala-Glu-Asp-Gly.
• It was modelled on epithalamin, an extract of cattle pineal glands.
• Studies link it to melatonin and to telomerase activity in cells.
• How it behaves inside the human body is largely unknown.