TB-500
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Research summary
TB-500 is marketed as a synthetic version of a short active region of thymosin beta-4 (Tβ4), a naturally occurring actin-regulating protein studied for roles in cell migration and wound repair. Most published research covers full-length Tβ4 or related fragments rather than the specific synthetic "TB-500" product itself.
In mouse studies, full-length Tβ4 and an actin-binding-domain fragment shortened dermal wound healing time versus control, with effects also reported in diabetic and aged-mouse models. Direct evidence for TB-500 itself is largely limited to in vitro fibroblast assays and metabolite studies —no completed, published human randomized controlled trials have evaluated TB-500 for tissue repair.
Sources: Applied Sciences, 2026 scoping review; PMC4963596; PMC2813286. Findings from published research —not a claim about this product, and not evidence of safety or effectiveness for human use.
Decoding the Benefits
- Wound healing time measurably shortened in difficult-to-heal conditions, including impaired-healing and aging models.
- Thymosin beta-4's core activity — directing cells to migrate toward an injury site — is the proposed basis for its tissue-repair reputation.
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