ZADAXIN™ thymosin alpha 1 (thymalfasin) for subcutaneous injection is
a purified sterile lyophilized preparation of chemically synthesized thymosin
alpha 1 identical to human thymosin alpha 1. Thymosin alpha 1 is an acetylated
polypeptide with the following sequence: Ac-Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn-OH,and
having a molecular weight of 3,108 daltons. The lyophilized preparation contains
1.6 mg thymosin alpha 1, 50 mg mannitol, and sodium phosphate buffer to adjust
the pH to 6.8.
Product for Injection: Prior to administration, the lyophilized powder
is to be reconstituted with 1 ml of the provided diluent (sterile water for
injection). After reconstitution, the final concentration of ZADAXIN (thymalfasin) is 1.6
mg/ml.
Last reviewed on RxList: 3/3/2009
This monograph has been modified to include the generic and brand name in many instances.