Wiktionary
bemesetron
n. A drug with antiemetic effects, used mainly in scientific research.
Wikipedia
Bemesetron
Bemesetron (MDL-72222) is a drug which acts as an antagonist at the 5HT receptor. It has antiemetic effects comparable to metoclopramide, however it is not used clinically, instead its main application is in scientific research studying the involvement of the 5HT receptor in the actions of drugs of abuse.