What is thymosin beta-4 used for?

The full-length, 43 amino acid natural peptide has been studied in finished early, mid-stage, and late-stage studies in people for wound healing, heart repair after injury, and problems of the cornea (the clear front of the eye) and other eye conditions. It is the parent molecule of the shorter piece sold as TB-500. Its study record belongs to it, not automatically to that piece, which the FDA's 2026 review treated as a separate, largely untested substance.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of healing and recovery peptides. BPC-157, TB-500, GHK-Cu, and the tissue repair family, including what actually has human data.