- Graft-vs-host disease (GVHD) prophylaxis: Patients receive tacrolimus IV continuously and then orally twice daily beginning on day -1 and continuing until day 60, followed by a taper until day 180 in the absence of GVHD. Patients also receive mycophenolate mofetil IV or orally twice daily beginning on day 0 and continuing until day 30, followed by a taper until day 60 in the absence of GVHD.