Peptides
TB-500 (Thymosin Beta-4)
In plain language
A peptide marketed online for healing injuries - but this is based on a different, related molecule that was studied, not the actual product being sold.
Hard safety warning
Not a real, regulated product — do not buy this online.
Is it an approved medication?
No — not an approved medication
NO - not an approved medication anywhere, and not a legal supplement either
How strong is the evidence?
None in humans for the product actually sold online
The main thing to know
No known safe human dose exists. This is an unregulated research chemical, not a real medical product.
Mechanism
Synthetic fragment/analog of thymosin beta-4; proposed to promote actin regulation, cell migration and angiogenesis in tissue repair (mostly preclinical/limited clinical data for the commercial fragment).
Potential benefits
- Tissue repair and wound healing (claims largely extrapolated from native T-beta-4 studies, not the sold fragment itself)
Regulatory status
Not approved as a dietary supplement or drug; sold as a research chemical; prohibited in sport (WADA)