TB-500 Frag (1-4)
healing recoveryTB-500 Frag (1-4) is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Also known as: TB-500 Fragment 1-4, TB-500 Thymosin Beta-4 Fragment 1-4, Thymosin Beta-4 Fragment 1-4, Thymosin Beta 4 (Fragment 1-4), TB4 Frag 1-4, Tetrapeptide Ac-SDKP
TB-500 Frag (1-4) is a tetrapeptide derived from the N-terminal end of Thymosin Beta-4. It functions by modulating the activity of fibroblasts and promoting cellular migration, which are critical processes in tissue repair and regeneration. TB-500 Frag (1-4) first drew attention for its potential to enhance wound healing and reduce inflammation. It acts specifically by increasing the levels of Ac-SDKP, a naturally occurring tetrapeptide known to regulate cell proliferation and differentiation in the context of tissue recovery. Today, it is primarily studied for its effects on:
- Enhancing wound healing
- Reducing inflammation
- Promoting tissue regeneration
Additionally, TB-500 Frag (1-4) is being investigated for its role in cardiovascular health.
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
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Size | |||
|---|---|---|---|
| Shop now | Shop | Shop | Shop |
| Product | Thymosin Beta 4 Fragment 1-4 Capsules | TB-500 Thymosin Beta-4 Fragment 1-4 Premium | Thymosin Beta-4 Fragment 1-4 Ac-SDKP 1 – Capsules |
| Size | 150 mg | 1 mg | |
| Price | $139.99 | $77.99 | $169.00 |
| Price/mg | $0.93/mg | $7.80/mg | $169.00/mg |
| Price change | 0% (16d) | 0% (16d) | 0% (10d) |
| Stock | In stock | In stock | In stock |
| Shipping | 5–7 days | 5–7 days | Same-day dispatch before 12PM EST |
| Reviews | 4.3(159) | 4.3(159) | 5.0(1) |
| Purity | — | 99% | — |
| COA | — | — | |
| Bulk discount | — | — | — |
Blends that contain TB-500 Frag (1-4)
Multi-peptide products that include TB-500 Frag (1-4) as an ingredient.
