Sixty-four patients treated with cisplatin-containing regimens were entered into a randomized, doubleblinded study examining the antiemetic efficacy of metoclopramide with and without lorazepam for control of cisplatin-induced emesis. Metoclopramide was administered to all patients at 2 mg/kg, intravenously, 30 minutes before chemotherapy and 1 5 3 . 5 , and 5.5 hours posttreatment. Patients randomized to receive combined antiemetic therapy were administered lorazepam at 2 mg/m2 (maximum, 4 mg dose) intravenously, 30 minutes before chemotherapy. Those patients not receiving lorazepam were given normal saline placebo. Degree of nausea and number of vomiting episodes were recorded on a data flow sheet with a visual analogue scale. Drug toxicities were evaluated before each administered dose. Patients receiving both metoclopramide and lorazepam experienced significantly less vomiting episodes (P < 0.05) and nausea (P < 0.01) when compared to patients given metoclopramide alone. Forty-four percent of those receiving the combined therapy reported no nausea or vomiting episodes compared to only 22% receiving metoclopramide alone. Sedation was significantly more common in patients receiving lorazepam (88%) as opposed to patients receiving only metoclopramide (43%), P < 0.01. Amnesia was seen in 25% receiving lorazepam.No significant difference in diarrhea, dystonia, or disinhibition was observed between the two arms. The authors conclude that the combination of lorazepam and metoclopramide was superior to metoclopramide alone in the prevention of cisplatin-induced nausea and vomiting, with sedation and amnesia more commonly observed in the combined regimen.Cancer 63578-582,1989.REATER THAN 75% of patients receiving cisplatin-G containing chemotherapy will experience nausea and vomiting.' Inadequate control of these potentially disabling toxicities may interfere with quality of life and decrease patient compliance in chemotherapeutic prog r a m~.~,~ Metoclopramide is an effective agent in decreasing the gastrointestinal toxicities associated with cislat tin.^-* To potentiate the antiemetic property of this