Testagen — Benefits, Dosage & Where to Buy
Research Overview
Testagen is a synthetic tetrapeptide bioregulator targeting testicular tissue and the male reproductive system. Developed by Dr. Khavinson, it modulates gene expression in Leydig cells and has been studied for age-related decline in testosterone production and male reproductive function.
Testagen has shown the ability to normalize testosterone levels and improve spermatogenesis parameters in aging animal models.
Key Research Findings
- •Normalized testosterone levels in aging animal models
- •Modulated gene expression in testicular Leydig cells
- •Improved spermatogenesis parameters in preclinical studies
- •Part of Khavinson's organ-specific bioregulatory peptide system
Research Dosage Protocols
Administered in 10-day courses of 10 mg daily, repeated 2-3 times annually.
For research reference only. Not medical advice. Not for human consumption.
Price Comparison (7 products from 7 vendors)
| Vendor | Price | Stock |
|---|---|---|
| Peptide Crafters | $55.00 $2.20/mg 25mg lyophilized | Out |
| Swiss Chems | $59.95 $3.00/mg 20mg vial | In Stock |
| Core Peptides | $63.00 $3.15/mg 20mg vial | In Stock |
| Peptide Sciences | $65.00 $3.25/mg 20mg lyophilized | In Stock |
| BioLongevity Labs | $79.97 $4.00/mg 20mg vial | In Stock |
| Limitless Biotech | $62.99 lyophilized | Out |
| Soma Chems | $64.99 vial | In Stock |
Frequently Asked Questions
What is Testagen?
Testagen is a synthetic tetrapeptide (Lys-Glu-Asp-Gly) developed by Professor Vladimir Khavinson as a bioregulator targeting testicular tissue. It is researched for modulating Leydig cell function, testosterone production, and spermatogenesis. It belongs to the Khavinson bioregulator peptide family.
Does Testagen increase testosterone?
Testagen is researched for its effects on Leydig cell gene expression and testosterone normalization in age-related decline models. It is a bioregulator peptide, not an anabolic agent — the research focus is on restoring normal physiological function rather than supraphysiological elevation.
How does Testagen compare to Kisspeptin-10?
Both are researched for reproductive hormone modulation, but through different mechanisms. Kisspeptin-10 stimulates GnRH release from the hypothalamus, triggering downstream LH and FSH production. Testagen is a bioregulator peptide that acts directly on testicular tissue gene expression. Kisspeptin-10 has more extensive Western clinical research.
Where can I buy Testagen for research?
Testagen is available from multiple research peptide vendors at $2.20 to $3.99 per milligram. Check the price comparison table above for current stock and pricing across vendors.
What is the Testagen dosage protocol?
The standard Khavinson bioregulator protocol uses 10mg daily for 10-day courses, repeated 2-3 times per year. Testagen follows this protocol, typically administered via subcutaneous or intramuscular injection.