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Not FDA approved and sold as a research chemical. This page is educational information only. It is not medical advice and not a recommendation to use anything.
IndexedBuilt automatically from public databases on 2026-09-30. Not yet hand-reviewed by PLOBT.How this works →

Testagen

Not FDA approved

Synthetic peptide bioregulator

Evidence score
27/ 100
Thin evidence

Very thin human evidence

  • Regulatory standing. Sold as a research chemical, not approved
  • Limited human data. Some human data exists, not conclusive
  • No registered human trials. Nothing registered on ClinicalTrials.gov
  • No sources. Nothing cited to verify

Computed with the same four public criteria as every profile. The human-evidence grade on an indexed profile is set automatically and may change when it is hand-reviewed. It is not a safety score, not a purity rating, and not medical advice, and not a claim that this compound treats, cures, or prevents any condition.

What it is

Testagen is a short synthetic peptide sold for research and usually grouped with the Russian-developed 'peptide bioregulators' associated with Vladimir Khavinson's work. It is commonly described as a small peptide modeled on extracts of testicular tissue, and proponents suggest it influences gene expression in reproductive or endocrine tissues. Its exact structure and mechanism are not well documented in major public databases.

What the evidence shows

Automatic summaryLimited human data

Human evidence is very thin, with one registered trial reaching Phase 2 and only two published papers, and no benefit has been established in humans. It is not FDA-approved, and most claims about its effects come from vendor or community sources rather than conclusive research.

This name is shared with unrelated compounds in public databases, so trial and paper counts are not shown here, and the evidence score counts no registered trials. Treat this profile as a starting point only.

Sources

Risks, side effects and study doses are only published on hand-reviewed profiles. Want this one reviewed, or spotted something wrong? Tell us.