Overview Sub-dissociative Dose Ketamine Dosing Study Status: Completed Trial end date: 2019-09-17 Target enrollment: Participant gender: Summary Goal is to determine if in adults presenting to the Emergency Department (ED) with moderate to severe acute pain, Ketamine administered at 0.15 mg/kg will provide similar pain relief to Ketamine administered at 0.3 mg/kg, with fewer adverse effects. Phase: Phase 4 Details Lead Sponsor: Loyola UniversityTreatments: Ketamine