Overview Efficacy and Safety of Once Daily Dosing Compared to Twice Daily Dosing of Nitisinone in HT-1 Status: Completed Trial end date: 2015-09-01 Target enrollment: Participant gender: Summary The purpose of this study is to look at the steady-state serum concentrations of nitisinone when switching from twice daily and once daily dosing. Phase: Phase 3 Details Lead Sponsor: Swedish Orphan BiovitrumTreatments: Nitisinone