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Metabolic Category

Testagen

THE HORMONAL OPTIMIZER

KEDG; Anterior Pituitary Peptide

Testagen is a synthetic tetrapeptide that targets the anterior pituitary gland. It enhances secretion of TSH (thyroid stimulating hormone), LH (luteinizing hormone), and FSH (follicle stimulating hormone), thereby supporting both thyroid function and testosterone production. It's used for andropause, low testosterone, thyroid support, and general hormonal optimization.

Testagen

Testagen

Testagen

Testagen Evidence Snapshot

How these guides are reviewed

Regulatory status: Not FDA approved · research use only
Dosing guidance: Reviewed by our clinical team
Linked evidence: 1 research sources
Content updated: May 8, 2026

Dose and schedule recommendations shown below come from The Peptide App Clinical Team. Research links are provided so readers can inspect the supporting evidence directly. Review the sources.

Quick Answers About Testagen

Is Testagen FDA approved?

No. This profile records Testagen as not FDA approved and for research use only.

More context

Review the regulatory and source details on this page for the current context.

What dose does The Peptide App Clinical Team recommend for Testagen?

Dose: 20 mg daily (oral or subcutaneous).

More context

Schedule: daily. Cycle: 4 weeks on, 12 weeks off. This is clinical-team guidance for reference and does not replace individualized instructions from a licensed clinician.

What research supports this Testagen guide?

This guide links to 1 curated or current research sources.

More context

Open the research section to inspect the source titles, publication details, study types, and available abstracts directly.

Review the Testagen research sources

Studied Effects & Mechanisms

TSH Stimulation

Upregulates thyroid hormone synthesis genes

LH/FSH Release

Stimulates gonadotropin production

Testosterone Support

Promotes Leydig cell testosterone synthesis

Immune Modulation

Enhances immune regulation via epigenetic effects

Clinical & Research Context

Men with low testosterone

Those with sluggish thyroid function

People wanting hormonal optimization

Anyone experiencing andropause symptoms

Those interested in pituitary support

Testagen Dosing

Dosage

20 mg daily (oral or subcutaneous)

Schedule

daily

Cycle

4 weeks on, 12 weeks off

Clinical Team Note

Take in the morning to align with pituitary activity

Get your exact syringe units with the reconstitution calculator

Clinical Team Dosing Guidance

Reported Timeline

Week 1-2

Peptide begins modulating pituitary function

Week 2-3

Improved energy and metabolism

Week 4

Hormonal optimization established

Hormonal changes may be measurable within 2-4 weeks.

Timelines summarize reported or expected patterns and are not guaranteed individual outcomes.

Clinical Safety Context

Excellent Safety

Editorial grade A · Excellent

SafetyAExcellent

FDA approval statusNo · research use only

Generally well tolerated with minimal side effects.

May affect hormone levels. Not for use in hormone-sensitive cancers.

Possible side effects

Rare injection site redness · Rare headache · Possible water retention

How to interpret safety grades

The Peptide App

Set up your Testagen schedule

Dose reminders and your schedule, ready the moment you open the app.

Research-Market Price Snapshot

A compact market signal for this profile. The dedicated pricing page owns vendor, vial-size, and price-per-mg comparisons.

Updated Jul 16, 2026

Vendors: 13
Listings: 13
Observed range: $32–$80

Compare all Testagen prices →

Testagen Research

No matching live papers returned

The live research feed did not return papers for this page. The curated references below remain available for crawlable source context.

Research references

[1]Khavinson et al. - Pituitary Bioregulator Research

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