Question: All of the following are TRUE regarding ondansetron EXCEPT: Need Assignment Help? Group of answer choices Ondansetron is a serotonin receptor antagonist for treating nausea and vomiting Ondansetron is a dopamine antagonist for treating constipation Ondansetron is associated with Q-T interval prolongation Ondansetron may be used in adult or pediatric clients and is available as an oral tablet, an orally disintegrating tablet, or intravenous injection