Bioregulators are the family of very short peptides — most are two to four residues — that came out of the St Petersburg Institute of Bioregulation and Gerontology under Vladimir Khavinson. Each was isolated from, or designed to match, a peptide fraction of one tissue: epitalon (AEDG) from the pineal gland, cartalax (AEDL) from cartilage, vesugen (KED) from vascular tissue, livagen (KEDA) from liver, pinealon (EDR) from brain cortex. The research literature on them is largely Russian-language and partly indexed in English, and the product pages are explicit about that.
The category also holds the longer complexes studied in the same tradition — cerebrolysin and thymulin — and the N-acetyl form of epitalon, which is a different compound with its own stability profile, not an alternative name.
Short peptides are easy to identify and hard to adulterate, and every lot here carries an independent certificate with purity and measured content against its batch code; sequence, CAS number and formula are published on each page. Where a compound’s evidence base is limited to its originating group, the page says so. Supplied strictly as laboratory research materials, shipped within Canada.