Definition

A drug used alone or with other drugs in adults to prevent nausea and vomiting caused by chemotherapy. Sustol blocks the action of a chemical called serotonin, which binds to certain nerves and may trigger nausea and vomiting. Blocking serotonin may help lessen nausea and vomiting. Sustol is a type of antiemetic and a type of serotonin receptor antagonist. Also called granisetron and Sancuso.