<unk>  is an antiemetic that is FDA approved for the prophylaxis of chemotherapy-Induced nausea and vomiting.   Common adverse reactions include bradyarrhythmia,constipation,headache.
Palonosetron hydrochloride
Lerisetron
Dolastetron 
Alosetron
Cilansetron
Tropisetron
Ramosetron
Granisetron 