Knowledge Center · Peptides

TB-500

Research peptideNot FDA-approvedPreclinical evidenceBanned in sport (WADA)

TB-500 is a synthetic fragment related to Thymosin Beta-4, studied in animals for actin regulation, cell migration, and tissue repair. Human clinical evidence is limited.

On this pageOverviewWhat is it?MechanismEvidenceApplicationsWhat we knowWhat we don't knowRisksDiscuss with a providerFAQReferences

Overview

TB-500 refers to a synthetic peptide based on an active region of Thymosin Beta-4 (Tβ4), a naturally occurring protein involved in cell movement and tissue repair. It is studied in preclinical models for wound healing, flexibility, and recovery. As with BPC-157, interest exceeds the human evidence.

What is it?

TB-500 is a synthetic research peptide, not an approved medication, typically sold through research-supply channels that are not held to pharmaceutical manufacturing standards.

Mechanism of Action

Proposed mechanisms, drawn largely from Tβ4 biology and animal models, include:

  • Actin binding — regulation of actin, a protein central to cell structure and migration, which is relevant to wound repair.
  • Cell migration and angiogenesis — supporting the movement of repair cells and new vessel formation in preclinical models.
  • Modulation of inflammation in injury models.

These mechanisms are based on Tβ4 research and animal data, not confirmed human clinical mechanisms for TB-500 specifically.

Current Scientific Evidence

The evidence base is predominantly preclinical, with limited human data.

Evidence typeStatus
Animal / in-vitro studiesSuggest roles in cell migration, angiogenesis, and tissue repair.
Human clinical trialsLimited; robust efficacy and long-term safety data in humans are lacking.

Potential Clinical Applications (under investigation)

Explored preclinically for soft-tissue recovery and wound healing. These are research directions, not established human treatments.

What We Know

  • It is related to a real, well-studied human protein (Tβ4).
  • It is not FDA-approved and is prohibited in sport under WADA.

What We Don't Know

  • Whether animal findings translate to humans.
  • Optimal human dosing and long-term safety.
  • Purity/identity of any given research-grade product.

Potential Risks & Considerations

  • Limited human safety data.
  • Research-grade product quality and contamination risk.
  • Prohibited in sport (WADA).
  • Legal status varies.

Who May Wish to Discuss It With Their Provider

Discuss any consideration of TB-500 with a licensed provider who can assess your situation and the limits of the evidence. This page is not a recommendation to use it.

Frequently Asked Questions

Is TB-500 the same as Thymosin Beta-4?

It is a synthetic fragment based on an active region of Thymosin Beta-4; they are related but not identical.

Is TB-500 FDA approved?

No. It is sold as a research chemical and is not an approved medication.

Is it banned in sport?

Yes — it is on the WADA Prohibited List.

Have questions about your own situation?

If you'd like help applying this information to your own health, schedule a consultation with the Bearing team.

Request a Consultation

Scientific References

  • Preclinical literature on Thymosin Beta-4 and TB-500 — search PubMed: “Thymosin beta 4” and “TB-500”.
  • WADA Prohibited List.

References are provided for further reading. Bearing summarizes the literature conservatively and updates pages as evidence evolves.

Related

Peptides: BPC-157 · Thymosin Beta-4 · Tools: Peptide Reconstitution Calculator

Educational disclaimer. This page is for general education and is not medical advice. It does not diagnose, treat, or recommend any substance. Many peptides are not FDA-approved; legal status varies and some are prohibited in sport. Discuss any decision with a licensed provider.