§ 01 Overview
Overview
Khavinson testis-derived tetrapeptide. Marketed as supplement; no indexed clinical trials.
No indexed clinical trials.
§ 02 Mechanism
Mechanism of action
Testagen (KEDG) is proposed to have testicular trophic activity via Leydig/Sertoli modulation. Evidence is primarily patent-level and reviews.
- 01Testicular trophic support (claimed)
§ 03 Dosing
Dosing protocol
Standard Protocol
- Dose Range
- 5 – 10 mg per course
- Route
- SubQ
- Frequency
- Daily for 10–20 days
§ 04 Evidence
Evidence & research
No indexed clinical trials.
FDA Status
Not FDA-approved.
§ 06 News
In the news
2 articles from the last 12 months · updates hourly
Testagen Peptide (KEDG): A Speculative Scientific Perspective - VC Reporter
Testagen Peptide (KEDG): A Speculative Scientific Perspective VC Reporter
Fitz Madrid Exits KUPD - RadioInsight
Fitz Madrid Exits KUPD RadioInsight
§ 07 Sourcing
Sourcing & supply
Regulatory status
Authentic supply from international sources
Authentic product originates from specific international manufacturers, most commonly Russian pharmaceutical facilities for Khavinson bioregulators. RUO vendors selling the same name are typically Chinese-synthesized research vials, not the original product.
International · 2
Cosmic Nootropic
The most credible Russian / Khavinson source for US buyers. Sources authentic bioregulators through 'Peptides Company' (ex-NPCRIZ).
Rupharma
12+ year Russian pharmacy reseller. Reviews.io 4.84/5 (81+). Has a genuine US warehouse for common peptides.
Listings are informational, not endorsement. Verify credentials and flags against FDA and PCAB databases before purchasing. Full directory & how to verify →
§ 09 Safety
Safety & side effects
Side effects
- 01Limited data
Contraindications
None specified.
§ 10 Questions
Testagen FAQ
- What is Testagen?
- Khavinson testis-derived tetrapeptide. Marketed as supplement; no indexed clinical trials. Testagen (KEDG) is proposed to have testicular trophic activity via Leydig/Sertoli modulation. Evidence is primarily patent-level and reviews.
- What is Testagen used for?
- Reported uses include testicular trophic support (claimed). Evidence strength is rated Experimental — see the evidence section for detail.
- How is Testagen dosed?
- Commonly referenced dosing is 5 – 10 mg per course, typically daily for 10–20 days, administered SubQ. This is educational reference only; consult a licensed clinician before use.
- What are the side effects of Testagen?
- Commonly reported side effects include limited data. This list is not exhaustive.
- Is Testagen legal?
- Authentic product originates from specific international manufacturers, most commonly Russian pharmaceutical facilities for Khavinson bioregulators. RUO vendors selling the same name are typically Chinese-synthesized research vials, not the original product. FDA status: Not FDA-approved..