Overview Quetiapine Fumarate Immediate Release (IR) Versus Extended Release (XR) Dose Escalation Comparison Status: Completed Trial end date: 2008-08-01 Target enrollment: Participant gender: Summary This study will compare the tolerability of Quetiapine Fumarate immediate release formulation and Quetiapine Fumarate extended release formulation during initial dose escalation in healthy volunteers. Phase: Phase 1 Details Lead Sponsor: AstraZenecaTreatments: Quetiapine Fumarate