Testagen
Also known as: KEDG Tetrapeptide
Primary recreational use: Endocrine regulation and hormonal balance
What is Testagen?
Testagen, also known as KEDG, is a synthetic tetrapeptide bioregulator developed by Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology. It primarily targets anterior pituitary gland function, aiming to regulate TSH levels and indirectly support testosterone and thyroid hormone production. Although it is approved as a supplement in Russia, it remains unapproved by the FDA with primary usage based on preclinical research. Potential risks include hormonal fluctuations and contraindications in thyroid cancer or hyperthyroidism.
Primary Benefits
Supports thyroid function. May enhance testosterone levels. Promotes reproductive health.
How It Works
Testagen crosses cell and nuclear membranes to interact directly with DNA, modulating gene expression in pituitary cells. This interaction may stimulate TSH release and subsequently influence thyroid and testosterone activity, potentially optimizing hormone levels.
Safety Tips
Precautions reported in community discussions and literature. This is not a complete list.
- 1.DON'T use if you have thyroid cancer or hyperthyroidism.
- 2.AVOID using unverified peptide sources without third-party testing.
- 3.NEVER share needles to prevent infections.
- 4.DON'T exceed recommended doses without consulting a healthcare professional.
- 5.AVOID use during pregnancy or breastfeeding.
Use Contexts
Different purposes have different protocols, dosing, and considerations
Thyroid function optimization
limited evidenceTestagen is researched for its potential to influence thyroid hormone production through TSH modulation, impacting T3/T4 levels.
Evidence: Preclinical studies in avian models demonstrate effects on TSH release and thyroid function.
The following are ranges reported in published literature and community discussions. These are NOT recommendations or medical advice.
Timing: Morning
Notes: Aligns with natural circadian hormone rhythms
Community-Reported Protocols
Not recommendations: The following protocols are compiled from online communities and published literature. Pepbase does not endorse, recommend, or verify these protocols. They are provided for informational purposes only. Individual responses vary significantly. Consult a licensed medical professional before any use.
| Reported Goal | Reported Dose | Reported Frequency | Reported Route |
|---|---|---|---|
| Starting / Titration | 100mcg | Once daily | Subcutaneous injection |
| Building phase | 150mcg | Once daily | Subcutaneous injection |
| Standard phase | 200mcg | Once daily | Subcutaneous injection |
| Maximum phase | 250-300mcg | Once daily | Subcutaneous injection |
Pharmacokinetics
Reported Side Effects
This is not a complete list. Other side effects may occur.
Common
Serious / Rare
- Allergic reactions
- Thyroid function alteration
Injection-Specific Warnings
- Rotate injection sites to prevent tissue damage
- Use sterile technique
Storage
Testosterone support
limited evidenceTestagen is hypothesized to indirectly support testosterone levels through enhancement of thyroid function.
Evidence: Testagen's impact on testosterone is noted in conjunction with improvements in TSH levels.
The following are ranges reported in published literature and community discussions. These are NOT recommendations or medical advice.
Timing: Morning
Notes: Consistent daily timing is crucial for stable peptide levels
Community-Reported Protocols
Not recommendations: The following protocols are compiled from online communities and published literature. Pepbase does not endorse, recommend, or verify these protocols. They are provided for informational purposes only. Individual responses vary significantly. Consult a licensed medical professional before any use.
| Reported Goal | Reported Dose | Reported Frequency | Reported Route |
|---|---|---|---|
| Initial phase | 100mcg | Once daily | Subcutaneous injection |
| Maintenance | 200-300mcg | Once daily | Subcutaneous injection |
Pharmacokinetics
Reported Side Effects
This is not a complete list. Other side effects may occur.
Common
Serious / Rare
- Allergic reactions
- Thyroid function alteration
Injection-Specific Warnings
- Rotate injection sites to prevent tissue damage
- Use sterile technique
Storage
Harm Reduction Information
Quality Concerns
- Verify source with COA for purity
- Avoid yellow/brown coloration in reconstituted solutions
Safety Tips
- Use bacteriostatic water for reconstitution
- Start with lower doses to assess tolerance
- Rotate injection sites to avoid damage
Warning Signs to Stop
- Unexpected severe mood changes
- Signs of allergic reactions (e.g., rashes, difficulty breathing)
Seek Medical Help Immediately If
- If experiencing severe allergic reactions
- If significant hormonal imbalance symptoms occur
Frequently Asked Questions
Common questions about Testagen
How long until I see effects?
Testagen's effects may become noticeable around weeks 4-8 for hormonal effects, as it is a bioregulator not a hormone.
What time of day should I take it?
It is recommended to administer Testagen in the morning to align with natural hormone rhythms.
How can I minimize side effects?
To minimize side effects, use Testagen under medical supervision, start with lower doses, and monitor for any adverse reactions.
Does tolerance develop?
Testagen does not have significant reports of tolerance development, but cycling is advisable.
How should I store it?
Store lyophilized Testagen at -20°C and reconstituted peptide at 2-8°C.
Do I need to cycle it?
Yes, it is recommended to cycle Testagen for 8-12 weeks with a break of 4-6 months between cycles.
Reported Combinations
Compounds reported to be used alongside Testagen in community discussions
Epitalon
Synergistic for pituitary function support
CJC-1295
Works well together for hormone optimization
BPC-157
Supports tissue repair alongside hormonal balance
Reported Interactions
Interactions reported in literature and community discussions.
Monitor thyroid function closely if using thyroid medication.
Potential interactions with testosterone levels.
May enhance effects due to synergistic action.
Reconstitution Calculator
100 units = 1 mL
Safety Tips
- Always consult a licensed medical professional for dosing and reconstitution instructions.
- Always double check your units. Mixing up mg and mcg can be very dangerous.
- Make sure to select your syringe type. U-100 and U-50 syringes have different units.
- Ensure you're not adding more BAC than your vial can hold. Most vials have maximum capacities listed.
This calculator is for informational and educational purposes only. It does not provide medical advice, dosing recommendations, or safety determinations. Reference ranges shown are compiled from publicly available sources and are not a substitute for guidance from a licensed healthcare professional.
Legal Status by Region
Regulatory status varies by country
USA
Not FDA Approved
UK
Not Approved
EU
Not Approved
Australia
Not Approved
Canada
Not Approved
Explore More Research
Browse our database of peptide research information compiled from published literature and community sources.
Citations
Last updated: October 2, 2023