Asubject received the wrong study drug resulting in severe nausea and vomiting, and a visit to the emergency room for treatment. the subject notified the study coordinator the day after the emergency room visit. the study coordinator reviewed the subjects study records and discovered the error. the coordinator notified the subject of the study drug error, which caused the nausea and vomiting. the investigator notified the irb and the irb approved a revision of the standard pharmacy procedure for administering investigational drugs.