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Kia Michel, a board certified urologist, surgeon, and founding member of Comprehensive Urology in Beverly Hills, Los Angeles

Key Takeaways TB-500 is NOT FDA approved No regulatory approval exists for TB-500 in any therapeutic indication Derived from Thymosin Beta-4: TB-500 is a synthetic fragment of the naturally occurring 43-amino-acid protein Thymosin Beta-4 (T4) No active FDA clinical trials: There are no current IND applications or FDA-registered trials for TB-500 itself Published preclinical research exists: Thymosin Beta-4 has peer-reviewed studies on wound healing, actin regulation, and cardiac repair WADA Prohibited List: TB-500 is classified under S2 (Peptide Hormones, Growth Factors) on the World Anti-Doping Agency banned substance list Research-grade availability: TB-500 is available for laboratory and investigational use only What Is TB-500

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Designed to refine texture and refresh dull, tired-looking skin

For a detailed overview of Australian research-compound regulation, see our guide to peptide legality and TGA compliance in Australia

Copper binding : The presence of copper ions stabilizes the peptide, potentially improving absorption