TB-500: Cytoskeletal and Cellular Migration Regulator TB-500, the synthetic form of Thymosin Beta-4 (T4), functions primarily through actin-binding and cytoskeletal reorganization
The regulatory landscape is evolving: in February 2026, HHS announced that approximately 14 previously restricted peptides including BPC-157, TB-500, CJC-1295, Ipamorelin, and Sermorelin are expected to return to Category 1 compounding status
patients should use backup or non-oral contraception for 4 weeks after each dose change
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