SUMMARYThe anti-emetic properties of metoclopramide were investigated by means of a double-blind trial in patients after evacuation of the uterus following incomplete abortion. Vomiting occurred in only 6 of 50 patients who were given metoclopramide 20 mg by intramuscular injection immediately after operation, compared with 24 in a group of 50 in whom normal saline was injected. This difference is significant. There was a reduction in other postoperative side effects although all the differences were not statistically significant.