Midwest Peptide sells research peptides exclusively to qualified researchers and laboratories for in vitro and laboratory use. Please confirm before continuing.
By proceeding you affirm the statements above are true. Products are sold for research use only (RUO), are not for human or veterinary use, not for use in diagnostic procedures, and have not been evaluated by the U.S. Food and Drug Administration. Full disclaimer.
For research purposes only. This compound is not FDA approved. All data presented is from clinical trials for educational reference.

A 43-amino acid synthetic fragment of thymosin beta-4 that regulates actin polymerization and promotes cell migration in preclinical research. Premium Research Peptide.
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TB-500 is a synthetic analog of Thymosin Beta-4, a naturally occurring peptide involved in actin regulation and cellular repair mechanisms.
10mg Vial
TB-500 is a research peptide for laboratory investigation of tissue repair and regeneration pathways. Each vial contains 10mg of lyophilized peptide for research purposes only. Third-party 7x tested with Certificate of Analysis (COA) available. Purity: >99%. COA Batches: MPTB001
TB-500 is a precision-formulated research compound produced under standardized manufacturing protocols with batch-level consistency and quality control verification. Each unit is supplied in sealed packaging designed to support stability during transit and storage when handled according to provided guidelines.
Research teams can integrate TB-500 into established protocols with confidence, supported by documented production standards, clear labeling, and dependable supply continuity. Minimizing exposure to excess heat, moisture, and light helps maintain consistency across evaluation periods.
This product is intended strictly for in-vitro laboratory research and analytical applications conducted by qualified research personnel or institutions. It is not for human or veterinary use and must not be used as a drug, food additive, cosmetic, or household item.
This compound is sold for research and educational purposes only. It has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any condition or disease.
TB-500 is a synthetic 17-amino-acid fragment of thymosin beta-4 (TB-4), a naturally occurring actin-binding protein. In research it is studied for actin sequestering, cell migration, and tissue repair model systems. Supplied strictly for Research Use Only.
Not exactly. TB-500 is a 17-residue fragment of full-length thymosin beta-4 (a 43-residue peptide). The fragment retains the central actin-binding region and is the form used in most published research literature on this molecule.
TB-500 is studied in preclinical research on actin polymerization, cell migration model systems, vascular endothelial cell research, and tissue repair endpoints in rodent injury models. All cited studies are conducted in cellular or rodent systems.
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Research articles and insights related to TB-500

TB-500 and BPC-157 pairing research review covering complementary mechanisms, additive and synergistic endpoints, tissue repair, cardiovascular and angiogenesis combination work, and the connection to KLOW and GLOW multi-peptide blends. For research use only.
April 27, 2026

TB-500 connective tissue research review covering Achilles tendon, medial collateral ligament, rotator cuff, and patellar tendon animal-model studies, with attention to histological, biomechanical, and molecular endpoints. For research use only.
April 27, 2026

TB-500 mechanism of action review covering G-actin sequestration via the conserved LKKTETQ motif, cell migration biology, angiogenesis mechanism, anti-inflammatory effects, and methodology for cytoskeletal mechanism research. For research use only.
April 27, 2026

Head-to-head research comparison of TB-500 and BPC-157 covering mechanism differences, pharmacokinetics, tissue repair endpoints, tendon and ligament work, and combination research designs in animal models. For research use only.
April 27, 2026
Not for human consumption. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.
By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.
Every batch of TB-500 ships with a third-party COA verifying purity by HPLC (>=99%), identity by mass spectrometry, and lyophilized mass. The batch-specific COA is published on this product page before purchase.
Lyophilized TB-500 is stored at -20C for long-term storage and 2-8C for short-term use within 30 days. Avoid repeated freeze-thaw cycles. Store in original sealed vials, protected from light.
TB-500 is not FDA-approved. The product supplied here is for laboratory and research use only and is not approved for diagnostic, therapeutic, or human use.