Peptides

TB-500 (Thymosin Beta-4): Complete Research Guide

TB-500 is a synthetic version of a peptide fragment derived from Thymosin Beta-4, a naturally occurring protein involved in actin regulation and cell migration.

📖 5 min read 🗓️ Updated August 2026 ✍️ Compound X Research Team 🇺🇸 US, UK, CA & AU Sourcing
TB-500 (Thymosin Beta-4) research guide cover

🔬 Studied for: Wound & Tissue Repair Research

💊 Also studied for: Cardiac & Vascular Research

🧪 Not FDA-approved — sold strictly for laboratory research

📈 No standardized human dosage established in published literature

What Is TB-500 (Thymosin Beta-4)?

TB-500 is a synthetic version of a peptide fragment derived from Thymosin Beta-4, a naturally occurring protein involved in actin regulation and cell migration. It is frequently studied alongside BPC-157 in tissue-repair and regenerative-research literature.

Mechanism of Action

TB-500 is a fragment of the actin-binding protein Thymosin Beta-4. Research suggests it may influence cell migration, angiogenesis, and the formation of new blood vessels and muscle fibers, which are the mechanisms most commonly cited in wound-healing and cardiac-repair studies.

Studied Benefits

These are effects TB-500 (Thymosin Beta-4) has been studied for in available preclinical and early research — not claims about guaranteed outcomes.

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Wound & Tissue Repair Research

Preclinical studies have investigated Thymosin Beta-4 fragments for their potential role in accelerating dermal wound closure and skeletal-muscle repair through effects on cell migration and angiogenesis.

Cardiac & Vascular Research

A portion of the Thymosin Beta-4 literature has examined its effects in animal models of cardiac injury, where researchers have investigated its role in supporting vascular formation and reducing scar tissue after ischemic injury.

Dosing Guide

What the research shows

Doses reported in animal studies vary widely by model and body weight and do not translate to an established human dose. No clinically approved human dosage exists for TB-500.

Compound X does not provide dosing recommendations. TB-500 (Thymosin Beta-4) is sold for laboratory research use only and is not intended for human consumption.

Reported Side Effects

Human safety data for TB-500 is limited, as it is not FDA-approved and has not completed large-scale human trials. Reported concerns in available reports include injection-site reactions and transient fatigue; long-term human safety remains uncharacterized.

FAQ

Is TB-500 (Thymosin Beta-4) FDA-approved?

No. TB-500 (Thymosin Beta-4) is not FDA-approved for any indication and is sold strictly as a research chemical, not a medication or dietary supplement.

What is TB-500 (Thymosin Beta-4) commonly studied for?

Wound & Tissue Repair Research — Preclinical studies have investigated Thymosin Beta-4 fragments for their potential role in accelerating dermal wound closure and skeletal-muscle repair through effects on cell migration and angiogenesis.

Is TB-500 (Thymosin Beta-4) legal to buy in the US?

In the US, UK, Canada and Australia, TB-500 (Thymosin Beta-4) is generally sold labeled "for research use only, not for human consumption." It is not approved as a dietary supplement or medication in any of these countries.

References

Peer-reviewed Thymosin Beta-4 research is indexed on PubMed under search terms such as "Thymosin Beta-4 wound healing" and "TB-500 tissue repair."

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