Antiemetics An antiemetic is a medication used in the treatment and/or prevention of nausea and vomiting. Remember generic names are our friend because meds in the same classification often have similar generic names but brand names can come and go. Here are some common classes of antiemetics and their generic names – notice the similarities in the generic names: 5-HT3 receptor antagonists (serotonin antagonists) Dolasetron (Anzemet) Granisetron (Kytril, Sancuso) Ondansetron (Zofran...