Thymosin Beta-4
TB4Actin-regulating repair peptide.
Also known as: Tβ4, TB4
Overview
Thymosin Beta-4 is a naturally occurring peptide studied in tissue-repair, cell-migration, and cardiovascular-research models; TB-500 is its synthetic fragment.
The naturally occurring 43-amino-acid actin-binding peptide from which TB-500 is derived. Research highlights roles in cell migration, angiogenesis, and tissue repair across muscle, cardiac, corneal, and dermal models — making it a foundational healing peptide.
Sequesters actin monomers and promotes cell migration, angiogenesis, and repair signaling across tissue types.
Molecular information
The full-length parent peptide; TB-500 is a synthetic fragment of its active region.
Pharmacokinetics
Illustrative relative-concentration model derived from published pharmacokinetic research. Curve is normalized and provided for educational comparison only — not a dosing schedule.
Research applications
- Tissue-repair research
- Cardiovascular-recovery studies
- Cell-migration investigations
Research protocols
Protocols summarized from published research models. Provided for scientific reference only — not dosing guidance for human use.
Observed effects timeline
Aggregated observations reported across research literature. Timing and magnitude vary by model and are not a guarantee of outcome.
Week 1–2
Cell-migration and angiogenesis signaling reported in repair models.
Week 3–6
Tissue-remodeling and recovery changes reported across multiple tissue types.
Research compatibility
Describes how compounds are studied alongside one another in the literature. Not a recommendation to co-administer.
TB-500
TB-500 is a fragment of this peptide — redundant activity.
BPC-157
Frequently co-studied for complementary repair pathways.
BPC-157 + TB-500
This peptide may already be represented in the blend.
How to reconstitute
Reconstitute with bacteriostatic water, swirl gently, and refrigerate. Avoid shaking to preserve the peptide.
- 1Allow the vial to reach room temperature (15–20 minutes).
- 2Swab the stopper with alcohol and let it air dry.
- 3Add bacteriostatic water slowly down the vial wall.
- 4Swirl gently until dissolved into a clear solution.
- 5Refrigerate at 2–8 °C and protect from light.
Quality indicators
Uniform white powder
Lyophilized cake should be white to off-white without discoloration.
Clear solution
Reconstitutes to a clear, colorless, particle-free solution.
Cold-chain integrity
Reconstituted solution requires 2–8 °C storage.
Slight clumping
Small clumps that dissolve completely with gentle swirling are acceptable — shipping can cause minor compaction.
Collapsed or melted appearance
Powder that looks collapsed, melted, or stuck to the vial walls may have been exposed to heat in transit.
Cloudy after reconstitution
Persistent cloudiness, particles, or precipitate after gentle mixing can indicate a degraded or contaminated peptide.
Reported observations & safety
Safety signals reported in the research literature. Compiled for scientific awareness — not medical advice.
- Generally reported as well tolerated in research; mild injection-site reactions are the most common signal.
- As an angiogenic/pro-migratory factor, theoretical proliferation considerations are noted in the literature.
References & further reading
Thymosin beta-4 in tissue repair and regeneration (review)
Review of TB4's actin-sequestering activity and its roles in cell migration, angiogenesis, and multi-tissue repair.
View studyTopics
This entry is provided for educational and informational purposes only. It is not medical advice, a dosing protocol, or a claim of therapeutic benefit. Research compounds are supplied strictly for laboratory and research use — not for human or veterinary consumption.
Substantial peer-reviewed research across multiple models.
This compound is part of our educational reference and is not currently stocked. Browse the catalogue for available research-grade peptides.
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