Description
TB-500 (Thymosin Beta-4 Fragment)
TB-500 is a synthetic version of a naturally occurring peptide fragment of Thymosin Beta-4. It is primarily researched for its role in tissue repair, wound healing, and anti-inflammatory processes. TB-500 works by regulating actin polymerization, a key protein involved in cell structure, migration, and differentiation. This mechanism promotes cell movement, angiogenesis, and tissue regeneration, making it a subject of interest in injury recovery and regenerative research.
Key Benefits
- Accelerates Tissue Healing: Supports faster recovery of muscle, tendon, ligament, and skin injuries.
- Promotes Angiogenesis and Regeneration: Encourages new blood vessel formation and cellular repair.
- Reduces Inflammation: Helps lower inflammation in tissues and joints.
- Improves Flexibility and Mobility: May reduce muscle stiffness and prevent adhesions or fibrous scar tissue.
- Supports Overall Recovery: Studied for its potential in muscle repair and post-injury rehabilitation.
Administration Options
- Subcutaneous (SQ) Injection: Most common method, often used for localized or systemic delivery.
- Intramuscular (IM) Injection: Preferred for deeper tissue repair or targeted injury sites.
- Intranasal: Less common route occasionally explored for systemic effects.
Potential Side Effects
- Generally Well-Tolerated: Considered to have a favorable safety profile in research settings when used at appropriate dosages.
- Common (Mild): Lightheadedness, nausea, dizziness, or lethargy.
- Local Reactions: Headache, redness, swelling, or itching at the injection site.
- Rare: Rash or other mild hypersensitivity reactions.
Note: TB-500 is not FDA-approved and is used exclusively for research purposes.
TB4 (Thymosin Beta-4) and TB-500 are related but not the same.
Quick Comparison:
| Feature | Thymosin Beta-4 (TB4) | TB-500 |
|---|---|---|
| Structure | Full-length 43 amino acid peptide | Synthetic 7 amino acid fragment (Ac-LKKTETQ) |
| Origin | Naturally occurring in the human body | Synthetic analog modeled after part of TB4 |
| Main Focus | Broader biological effects (stem cell activation, immune modulation, organ-level regeneration) | Primarily actin-binding, cell migration, and localized tissue repair |
| Half-Life | Shorter (~2 hours) | Longer (2–4 days) – more stable for research use |
| Common Use in Research | More complete regenerative potential | More practical for injury healing protocols |


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