Patients will be monitored by a study physician co-investigator physically present with the patient, for a total of 120 minutes after administration of medication. They will be asked q-5-minutes, through 60 minutes, to rate their pain and degree of nausea, as well as to describe any adverse reactions to the medication. Both pain and nausea levels will be recorded using 10-point scales. Use of such scales is common in the pain literature, and is an emerging tool for evaluation of nausea.1,2 Data collection for analgesia efficacy will cease after 60 minutes, but patients will be monitored for at least another 60 minutes to maximize safety; patients will be assessed for discharge suitability by treating clinicians/nurses in the same fashion as other ED patients who receive opioids.