Testagen (20mg)
Testagen is a Khavinson bioregulator that targets the testes and male reproductive function. Reconstitute with 2mL of bacteriostatic water for a concentration of 10mg/mL.
Reviewed by the AllPeptides.eu Editorial Team·Last reviewed: 2026-06-16
Educational information. Not medical advice, and no efficacy claim is implied. Regulatory approval is not a use recommendation by AllPeptides.eu.
⚠️ For informational/educational purposes only. Not medical advice. We do not sell any products. Self-treatment carries serious risks — consult a healthcare professional. Disclaimer
How It Works
Testagen epigenetically regulates gene expression in Leydig and Sertoli cells, supporting natural testosterone production, spermatogenesis, and overall male reproductive health.
Quick Start
- Typical dose: 1–2mg subcutaneously
- Frequency: Daily for 10–20 days
- Storage: 2–8°C after reconstitution
Dosing Table — Testagen 20mg
Route: Subcutaneous injection | Frequency: Daily
| Week | Dose | Units (per injection) |
|---|---|---|
| 1–2 | 1mg | 10 Units (0.10 mL) |
| 3+ | 2mg | 20 Units (0.20 mL) |
10–20 day cycle, repeat every 3–6 months. Often combined with Prostamax.
Related compounds
Reconstitution Steps
- Clean the stoppers with an alcohol wipe.
- Withdraw 2mL of bacteriostatic water.
- Inject slowly down the side wall of the vial.
- Swirl gently until fully dissolved.
- Store in the refrigerator (2–8°C).
Protocol Overview
- Bioregulator of testicular function — regulates Leydig cells.
- Goal: natural testosterone support via epigenetic regulation.
- Used in male health and fertility protocols.
Dosing Protocol
- 1–2mg/day for 10–20 days.
- Repeat every 3–6 months.
- Combine with Prostamax (prostate) and Cartalax (musculoskeletal).
- Break between cycles: After the cycle (10–20 days), a 3–6 month break is recommended. Khavinson bioregulator peptides — typically 2–3 cycles/year.
Washout & Cycle Restart
When can I restart?
After the cycle (10–20 days), a 3–6 month break is recommended. Khavinson bioregulator peptides — typically 2–3 cycles/year.
Minimum wait period: 12 weeks
Storage Instructions
- Reconstituted: 2–8°C, use within 21 days.
- Powder: 2–8°C.
Important Notes
- Check hormone profile before and after the cycle.
- It is not anabolic — it works through physiological regulation.
- Cumulative action.
Potential Benefits & Side Effects
Potential Benefits:
- Supports natural testosterone production
- Improves spermatogenesis
- Anti-aging effect on the reproductive system
- Enhances libido
Potential Side Effects:
- Mild injection site irritation
- Rarely: transient increase in libido
⚠️ Serious Warnings & Long-Term Risks
The following warnings are based on published literature, FDA labels, and post-marketing surveillance. They do not constitute medical advice. Consult a healthcare professional.
Testicular bioregulator — potential hormonal dysregulation
Regulates Leydig/Sertoli cells. In patients with hormone-dependent diseases (prostate cancer), increased testosterone may be contraindicated.
📄 Khavinson VK — Bull Exp Biol MedReferences
- Testicular Bioregulation — Khavinson VK, et al. Peptide bioregulation of aging. Bull Exp Biol Med. 2013;155(4):391-393.
View Source - Khavinson Peptides — Khavinson VK. Peptides and Ageing. Neuroendocrinol Lett. 2002;23 Suppl 3:11-144.
View Source
Recommended Supplements
Multivitamin (High-quality)
External Sources & Regulatory Status
Regulatory Approvals
Тестаген® · Testes / Reproduction (2007)
Approved in Russia (Khavinson bioregulator)
Educational information. Not medical advice, and no efficacy claim is implied. Regulatory approval is not a use recommendation by AllPeptides.eu.
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