Thymosin Alpha-1, Thymulin, and Thymalin: Three Thymic Substances, Three Different Things

    Quick answer: These three names get used interchangeably across the peptide market, and they should not be. Thymosin alpha-1 is a 28-amino-acid synthetic peptide. Thymulin is a 9-amino-acid synthetic peptide requiring zinc for activity. Thymalin is not a single peptide at all - it is a polypeptide complex extracted from calf thymus. Two […]