Main Page | See live article | Alphabetical index An antiemetic is a drug that is effective against vomiting and nausea. Antiemetics are typically used to treat motion sickness and the side effects of chemotherapy directed against cancer. Antiemetics include: Dopamine antagonists metoclopramide 5-Hydroxytryptamine antagonists dolasetron granisetron ondasetron See also: emetic. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.