Livagen
Also known as: Lys-Glu-Asp-Ala
Livagen is a synthetic tetrapeptide (Lys-Glu-Asp-Ala / KEDA) from the Khavinson short-peptide 'bioregulator' series, developed at the St. Petersburg Institute of Bioregulation and Gerontology. Marketed in Russia primarily as a food-supplement-grade cytomax; not FDA-approved in the US; research-use only.
Who's worth your money for Livagen
Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.
Top Merit pick
Highest Merit Score (96) of 2 scored sellers
$79.97 · 20mg · 99.8% purity
Best value
Lowest $/mg among scored sellers
$49.49 · 20mg · 99.0% purity
Average price
$3.75/mg
Sellers
10
45-day trend
+22.2%
8 of 10 sellers have a current price· 4 stale hidden· 2 unverified hidden
Top Merit pick
🇺🇸 BioLongevity Labs96✓ verified at source · just now
$4.00/mg +6.5% vs avg$79.97
20mg
- 🇺🇸 Peptidology89
✓ verified at source · just now
$2.47/mg -34.1% vs avg$49.49
20mg
Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.
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About Livagen
CAS
—
Molecular formula
C18H31N5O9
Sequence
KEDA
Typical dose range
100-500 mcg/day subcutaneous
Half-life
~30 minutes (estimated)
COAs for Livagen
11 third-party tests across 4 vendors. Each card links to the full report.
For
Livagen
by Peptide Supply Co.· batch LN20-06032026
For
Livagen
by BioLongevity Labs· batch cmojb6vlk016ikirxn7h5c3ad
For
Livagen
by Kimera Chems· batch KC-LVG-HPK1
For
Livagen
by Skye Peptides· batch LIV26-25-001
For
Livagen
by Peptidology· batch 1671
For
Livagen
by BioLongevity Labs· batch 38-3-46035
For
Livagen
by BioLongevity Labs· batch cmojb7apu01a3kirxg8tcvox6
Purity not on file
For
Livagen
by Skye Peptides· batch LIV26-25-001
Purity not on file
For
Livagen
by Skye Peptides· batch LIV26-25-001
Purity not on file
For
Livagen
by BioLongevity Labs· batch 38-3-45958
Purity not on file
For
Livagen
by BioLongevity Labs· batch cmojb7ama01a2kirxmdup77g1
12 citations indexed for Livagen
review · 2025
Overview of Epitalon-Highly Bioactive Pineal Tetrapeptide with Promising Properties
Epitalon, also known as Epithalon or Epithalone, is a tetrapeptide, Ala-Glu-Asp-Gly (AEDG), which was synthesized based on the amino acids composition of Epithalamin, a bovine pineal gland extract, prior to its discovery in pineal gland polypeptide complex solution.
Study · 2023
EPIGENETIC MODIFICATION UNDER THE INFLUENCE OF PEPTIDE BIOREGULATORS ON THE "OLD" CHROMATIN
In the present study, on the one hand, the epigenetic modification of condensed "old" chromatin was determined, and on the other hand, the influence of peptide bioregulators (Ala-Glu-Asp-Gly-Epitalon; Lys-Glu-Asp-Ala-Livagen; Ala-Glu-Asp-Pro - Cortagen and Lys-Glu - Vilon) on condensed chromatin in lymphocytes from old…
Study · 2020
[The influence of polypeptide liver complex and tetrapeptide KEDA on organism physiological function in norm and age-related pathology.]
The applying of many drugs in elderly and old people often is the reason of liver dysfunction. Thereat, the risk of liver fibroid induration, acute and chronic hepatitis increases during aging. It is the reason to find new, effective and harmless hepatoprotectors.
Study · 2017
[EVALUATION OF GENOMIC PARAMETERS IN DUCTAL BREAST CANCER PATIENTS AND THE ABILITY OF IT'S CORRECTION]
The level of DNA single strand breaks, chromosomal abnormalities and sister chromatid exchanges and the possibility of its normalization with oligopeptide bioregulator Livagen and cobalt ions in the lymphocyte culture from patients with breast cancer have been studied.
animal · 2017
Peptides (Epigenetic Regulators) in the Structure of Rodents with a Long and Short Lifespan
We have discovered motives of short-chain epigenetically active peptides in some proteins of long-lived African mole rat Heterocephalus glaber. These epigenetic regulators are located in the protein structure between lysine and arginine residues, thus facilitating their release in limited proteolysis.
Study · 2014
[Effect of peptide bioregulator and cobalt ions on the activity of NORs and associations of acrocentric chromosomes in lymphocytes of patients with hypertrophic cardiomyopathy and their relatives]
The influence of peptide bioregulator - Livagen (Lys-Glu-Asp-Ala) separately and combined with cobalt ions, on the activity of nucleolar organizer regions (NORs) and frequency of associations of acrocentric chromosomes in lymphocytes from patients with hypertrophic cardiomyopathy (HCM) and their relatives has been stud…