Reviewed & approved by Dr. Nova Reyes · Last checked 2026-10-25. ← Back to Evidence Library

Prostamax: what the evidence says

At a glance

What it is: a synthetic short peptide (Lys-Glu-Asp-Pro, "KEDP") from V. Kh. Khavinson's "peptide bioregulator" program in St. Petersburg, promoted for prostate health.

What the evidence says: no human trials found, including for chronic prostatitis. Lab studies report chromatin (DNA-packaging) changes in white blood cells from old people and growth effects in rat prostate tissue. ^{R1, R2, R3}

Biggest risks: unknown. No human safety data were found. Unknown Gray-market vials add quality risks.

Rating


Human Human evidence	No human data
Animal Animal / lab evidence	Reported (developer-led): lab-dish and rat-tissue studies ^R1–R3
Regulatory	Not FDA-approved (no Drugs@FDA record) · Russia: registration status UNVERIFIED · WADA 2026: not named; S0 (unapproved substances) likely applies
Established human dose	None. Study details lists what studies used where reported

Evidence verdict: Human: No human data Card verdict: No human data (prostate claims rest on rat tissue and white-blood-cell dish studies only) Card note: Animal/lab data only (developer-led), see page

This page reports what studies used. It is not dosing advice.

Legend: HUMAN data · ANIMAL / LAB data · UNKNOWN · UNVERIFIED: not yet confirmed against a primary source

About the evidence (developer-led): most of this literature comes from V. Kh. Khavinson's St. Petersburg Institute of Bioregulation and Gerontology and allied Russian, Ukrainian and Georgian groups. Many papers are short, Russian-language, and not independently repeated. Read the findings as the developers' own reports.

What is it?

Prostamax is a 4-amino-acid peptide (Lys-Glu-Asp-Pro, "KEDP"). Khavinson's group calls these "tissue-specific bioregulators" and proposes that they act on gene activity in the organ they are named for. ^R1 That idea is the developers' hypothesis and has not been confirmed independently. Unknown

Does it work?

Animal Cells from older people (lab dish): Prostamax changed chromatin structure in white blood cells from people aged 75–88. ^{R1, R2}
Animal Rat tissue: stimulated growth of rat prostate tissue explants (small pieces of living tissue) in a dish. ^R3
Unknown Prostate disease (prostatitis, enlarged prostate): no human trials found in PubMed. Russian-language clinical reports may exist outside PubMed: UNVERIFIED.
Unknown Human clinical trials: none found.

Is it safe?

Unknown No human safety data found.
Unknown Long-term effects unknown.

Gray-market "research use only" Prostamax: extra risks

Unknown contents. Vials sold online as "research use only" are not made under drug-quality rules, so identity, strength and sterility are unknown. This is a general caution; we have not found independent testing data for this product. Unknown Vendor claims about effects in people are marketing, not evidence. Unknown

What we don't know

Unknown Whether it does anything in people
Unknown Whether a short peptide like this survives digestion or reaches tissues when swallowed or injected
Unknown What is actually in a gray-market vial or capsule labelled "prostamax"

Is it legal?

Not FDA-approved (no Drugs@FDA record, openFDA query Oct 25, 2026). Russia: UNVERIFIED whether registered as a medicine in GRLS or sold only as a supplement. EU, UK, Japan, China: UNVERIFIED not checked against EMA, MHRA, PMDA or NMPA. WADA: not named on the 2026 Prohibited List; S0 bans at all times any substance with no current regulatory approval for human therapeutic use.

Study details

These are amounts researchers used, not recommendations.

Full reference list (PubMed entries checked Oct 25, 2026)

Khavinson VKh, Lezhava TA, Malinin VV. Bull Exp Biol Med. 2004;137(1):78-81. PMID 15085253
Dzhokhadze TA, et al. Georgian Med News. 2012;(212):76-82. PMID 23221144
Zakutskii AN, et al. Adv Gerontol. 2006;19:93-6. PMID 17152728

Disclaimer

This page is for education and harm reduction, not medical advice or a recommendation to use Prostamax. Talk to a clinician you trust before using any drug, and report problems to FDA MedWatch (https://www.fda.gov/safety/medwatch).

Approved for Adam Greene by Dr. Nova Reyes, 2026-10-25.