TB-500 (Thymosin Beta-4 Fragment)

Injury, Repair & Recovery
Phase 2
WADA Prohibited

TB-500 is a synthetic fragment of Thymosin Beta-4, a naturally occurring protein involved in tissue repair throughout the body. Research focuses on wound healing, tissue regeneration, and reducing inflammation.

Last updated March 6, 2026
14 PubMed-Verified Studies
Popular
Research-Driven Dosage Reports
RouteSubcutaneous (SC) · Intramuscular (IM)
Dose2–5 mg
Frequency2× weekly (loading), then weekly
Duration4–12 weeks

Based on published research literature.

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Overview of TB-500 (Thymosin Beta-4 Fragment)

Promotes tissue repair and regeneration by regulating actin dynamics, enhancing cell migration, and stimulating new blood vessel formation.

Tissue repair & recovery

G-actin sequestration regulates cytoskeletal dynamics, supporting cell shape, movement, and division for wound repair.

Promotes migration of endothelial cells, keratinocytes, and fibroblasts to injury sites (proposed), which may accelerate wound healing.

Vascular / angiogenesis

Stimulates new blood vessel formation through endothelial cell activation, improving blood supply to healing tissues.

Enhances capillary tube formation and vascular network development (proposed), which may support tissue oxygenation.

Inflammation / immune

Reduces inflammatory cytokine release and inhibits NF-κB signaling (proposed), which may limit excessive inflammation during repair.

Modulates extracellular matrix remodeling, influencing collagen deposition patterns during healing

Read Full TB-500 (Thymosin Beta-4 Fragment) Dosage Guide

Research-backed dosing protocols, timing, and administration details

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Injury, Repair & Recovery