I used Low Dose Ketamine for Pain relief in ED, and I had a very good experience with it, but new study in AJEM Feb, 6, showed that compare with morphine ,LD Ketmaine shares same characteristics regarding vital signs changes , adverse events, provider, and nurse satisfaction scores. The only difference was LDK provided maximum pain score reduction within 5 minutes versus Morphine within 100 min. LD ketamine means 0.3 mg/kg IV, and Morphine was used as 0.1 mg/kg.