1. GamaSTAN® is the only available hepatitis A immune globulin product in the United States, as of June 5, 2013 2. GamaSTAN® prescribing information 3. Grifols’ Medical Information Department can be reached at 1-800-520-2807 4. Updated GamaSTAN® dosing instructions HBIG Page last reviewed: September 13, 2021