TB-500

▸ Overview

TB-500 is a synthetic fragment of Thymosin Beta-4, a protein naturally present in almost all cells. It is studied for its role in cell migration, blood-vessel formation, reducing inflammation and repairing muscle, tendon and cardiac tissue.

▸ Mechanism of action

• A synthetic fragment of Thymosin Beta-4 (Tβ4), a protein that regulates actin polymerization in the cell cytoskeleton.
• Promotes the migration of endothelial cells, cardiomyocytes and keratinocytes, accelerating tissue regeneration.
• Stimulates angiogenesis: promotes the formation of new capillaries in damaged tissue, improving oxygen supply.
• Reduces local inflammation by inhibiting the migration of neutrophils and macrophages to the injury site.
• Activates muscle satellite cells, facilitating skeletal-muscle regeneration after injury.
• Has documented cardioprotective effects: reduces infarct area in models of myocardial ischemia.
• Its systemic distribution lets it act on tissues distant from the injection site, which distinguishes it from BPC-157.

▸ Administration

• Subcutaneous or intramuscular route: injection in the abdomen or near the affected tissue.
• Reconstitution: lyophilized powder with bacteriostatic water.
• Storage: mandatory refrigeration after reconstitution (2–8 °C).

▸ Timing

• No specific fasting restrictions.
• Can be administered at any time of day.
• Injection frequency varies by protocol (daily, every other day, or weekly).

▸ Dosing & cycles

• Initial loading phase: higher doses for 4–6 weeks to saturate the tissues.
• Maintenance phase: reduced doses for an additional 4–6 weeks.
• Typical cycles: 8–12 weeks with a subsequent break.

▸ Combinations

• TB-500 + BPC-157: a recognized synergy for musculoskeletal recovery.
• Frequently combined with GH peptides in performance protocols.
• Can be complemented with GHK-Cu for tissue and skin repair.

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