Thymosin alpha-1 (TA1) is a peptide naturally found in the thymus and is known for its ability to modify, enhance, and restore immune function. It’s derived from prothymosin alpha, a protein encoded by the PTMA gene. Studies suggest TA1 is generally safe for adults in subcutaneous doses ranging from 1mg to 16mg. Its role in immune modulation makes it a subject of ongoing research for various therapeutic applications.