Testagen 20mg
Testagen 20mg
Testagen is a synthetic tetrapeptide (Lys-Glu-Asp-Gly, KEDG) belonging to the Khavinson class of anterior pituitary-derived bioregulators. Preclinical research indicates effects on thyroid hormone normalization and male reproductive hormone modulation.
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Vial Size
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Dose Range
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Schedule
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Primary Goal
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| 20 mg vial | 100 to 300 mcg daily with gradual titration. | Daily subcutaneous injections for 8 to 12 weeks (extend to 16 weeks if desired). | Support endocrine function research, particularly pituitary-gonadal axis modulation. |
Reconstitution Summary
2 mL per 20 mg vial (10 mg/mL).
Storage Summary
Lyophilized frozen; reconstituted refrigerated; avoid freeze-thaw.
Recommended Product
Testagen 20mg
Reconstitution Steps
- Draw 2 mL bacteriostatic water with a sterile syringe.
- Inject slowly down the vial wall; avoid foaming.
- Gently swirl until dissolved (do not shake).
- Label and refrigerate at 2 to 8 °C, protected from light. At 10 mg/mL, 1 unit = 0.01 mL » 100 mcg on a U-100 insulin syringe.
How It Works
Testagen (Lys-Glu-Asp-Gly) belongs to a class of short bioregulatory peptides derived from anterior pituitary extracts. Preclinical research in avian models demonstrates this tetrapeptide can normalize thyroid hormone levels in hypophysectomized subjects and modulate endocrine signaling along the pituitary-gonadal axis. These peptides are hypothesized to act through gene-regulatory mechanisms influencing hormone synthesis and secretion. No human clinical trials exist.
Benefits & Side Effects
- Preclinical studies suggest normalization of thyroid hormone parameters in hypophysectomized models.
- Research indicates potential modulation of male reproductive hormones via pituitary pathways.
- No published human safety or efficacy data; side-effect profile in humans remains unknown.
- Occasional mild injection-site reactions (redness, itch) may occur with subcutaneous administration.
References & Scientific Literature
- Effects of hypophyseal Lys-Glu-Asp-Gly peptide on immunity, hemostasis, and thyroid function (PubMed).
- Khavinson VK et al. Peptide Regulation of Gene Expression: A Systematic Review.